OSTK


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:SharesOutstanding

us-gaap:CommonStockSharesIssued
us-gaap:StatementClassOfStock
us-gaap:PreferredStockSharesIssued

us-gaap:CommonStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementBusinessSegments

us-gaap:RealizedInvestmentGainsLosses

us-gaap:CostOfGoodsAndServicesSold
us-gaap:StatementBusinessSegments

us-gaap:GrossProfit
us-gaap:StatementBusinessSegments

us-gaap:OperatingExpenses
us-gaap:StatementBusinessSegments

us-gaap:GeneralAndAdministrativeExpense

us-gaap:SellingAndMarketingExpense

us-gaap:OperatingIncomeLoss

us-gaap:InterestExpense

us-gaap:InterestPaidNet

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
us-gaap:StatementBusinessSegments

us-gaap:NonoperatingIncomeExpense
us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaidNet

us-gaap:ProfitLoss

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:PreferredStockDividendsIncomeStatementImpact

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets
us-gaap:IncomeStatementLocation

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:LongTermInvestments

us-gaap:Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LiabilitiesCurrent

us-gaap:AccountsPayableCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:LongTermDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:MinorityInterest

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
us-gaap:AwardType

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ProceedsFromSaleOfLongtermInvestments
us-gaap:StatementEquityComponents
ostk:AdjustmentstoAdditionalPaidinCapitalNoncontrollingInterests

ostk:AdvertisingRevenueasaPercentageofTotalRevenue

ostk:AmortizationOfIntangibleAssetsIncludingImpactOfPurchasePriceAllocationAdjustments

ostk:CostOfGoodsAndServicesSoldFulfillmentAndRelatedCosts

ostk:CostOfGoodsAndServicesSoldFulfillmentAndRelatedCostsPercentage

ostk:CostOfGoodsAndServicesSoldPercentage

ostk:CostOfGoodsAndServicesSoldProductAndOther

ostk:CostOfGoodsAndServicesSoldProductAndOtherPercentage

ostk:DeductionsFromSalesReturnsCurrent

ostk:EquitySecuritiesGainLoss

ostk:EquitySecuritiesUnrealizedGainLoss

ostk:EquitySecuritieswithoutReadilyDeterminableFairValueImpairmentLossAndDownwardAdjustments

ostk:GainLossOnRepurchaseOfCrypocurrencies
us-gaap:StatementBusinessSegments
ostk:GiftCardAndClubORewardsBreakage

ostk:GrossProfitPercentage

ostk:ImpairmentOfCryptocurrencies

ostk:ImpairmentOnNotesReceivable

ostk:IncreaseDecreaseInOperatingLeaseLiability
dei:LegalEntity
ostk:NetCapitalRatioForBrokerDealer

ostk:NetIncomeLossAvailableToCommonStockholdersBeforeUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

ostk:NoncashOrPartNoncashAcquisitionCommonStockRepurchased

ostk:NoncashOrPartNoncashAcquisitionEquityMethodInvestmentAppliedToPurchasePrice

ostk:NoncashOrPartNoncashAcquisitionProceedsFromSaleOfCommonStockIncludedInAccountsReceivable

ostk:NoncashOrPartNoncashAcquisitionProceedsFromSaleofMarketableSecuritiesIncludedinAccountsReceivable

ostk:NoncashandorNonoperatingGainLossonSaleofCryptocurrencies

ostk:NoncashorPartNoncashAcquisitionDepositsAppliedToPurchasePrice

ostk:OperatingLeaseRightOfUseAssetAmortization

ostk:OtherEquityInvestmentAdjustments

ostk:OtherIncomeExpense
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
ostk:PartnersCapitalAccountExchangeofShares
us-gaap:StatementClassOfStock
ostk:PreferredStockSharesDividendsDeclared

ostk:RecognitionOfFinanceLeaseRightOfUseAsset

ostk:RecognitionOfOperatingLeaseRightOfUseAsset
us-gaap:StatementBusinessSegments
ostk:RevenuefromContractwithCustomerExcludingVitalChainandEvernym

ostk:SalesReturnsAdditionsToReserveForSalesReturns

ostk:SalesRevenueNetPercentage
us-gaap:AwardType, us-gaap:Vesting
ostk:SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingPercentage
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
ostk:Sharesdeclarednotdistributed

ostk:TechnologyExpense
us-gaap:StatementEquityComponents
ostk:TreasuryStockSharesAcquiredthroughBusinessCombination
us-gaap:StatementEquityComponents
ostk:TreasuryStockValueAcquiredThroughBusinessCombination
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalOther

us-gaap:AdvertisingExpense

us-gaap:CapitalExpendituresIncurredButNotYetPaid
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:CapitalizedComputerSoftwareAdditions
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:CapitalizedComputerSoftwareAmortization1

us-gaap:CashDivestedFromDeconsolidation

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:Depreciation
us-gaap:IncomeStatementLocation

us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment

us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:GainLossOnDispositionOfAssets1

us-gaap:GainLossOnSaleOfBusiness

us-gaap:ImpairmentOfLongLivedAssetsHeldForUse

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes

us-gaap:IncreaseDecreaseInDeferredRevenue

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InvestmentIncomeInterest

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:PartnersCapitalAccountUnitsConverted

us-gaap:PaymentsForProceedsFromLoansReceivable

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired
dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:StatementScenario
us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:PaymentsToAcquireLongtermInvestments

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:ProceedsFromIssuanceOfCommonStock
us-gaap:StatementEquityComponents

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:CounterpartyName, us-gaap:SubsidiarySaleOfStock
us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction
dei:LegalEntity, us-gaap:Ownership, us-gaap:SubsequentEventType
us-gaap:SaleOfStockPercentageOfOwnershipAfterTransaction
dei:LegalEntity, us-gaap:Ownership, us-gaap:SubsequentEventType
us-gaap:SaleOfStockPercentageOfOwnershipBeforeTransaction
dei:LegalEntity, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
us-gaap:StatementEquityComponents
us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation

us-gaap:ShortTermLeaseCost
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesNewIssues
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:TransferToInvestments

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

us-gaap:VariableLeaseCost

ostk:AccruedAccountsPayableCurrent

ostk:AccruedFreightCurrent

ostk:CashEquivalentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

ostk:ConcentrationOfRiskNumberOfBanks

ostk:MarketableSecuritiesandEquitySecuritiesFVNI
us-gaap:LongtermDebtType
ostk:MinimumLiquidAssets

ostk:PreferredStockNumberofVotes

ostk:SalesReturnReserveForSalesReturnsCurrent
dei:LegalEntity
srt:ExcessNetCapitalAt1500Percent
dei:LegalEntity
srt:MinimumNetCapitalRequiredForBrokerDealerSubsidiary1
dei:LegalEntity
srt:NetCapital

us-gaap:AccruedMarketingCostsCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CashEquivalentsAtCarryingValue

us-gaap:ContractWithCustomerLiability

us-gaap:DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DeferredRevenueCurrent
us-gaap:DeferredRevenueArrangementType

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType, dei:LegalEntity
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
us-gaap:Ownership
us-gaap:EquityMethodInvestmentOwnershipPercentage

us-gaap:EquityMethodInvestments

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:LossContingencyAccrualCarryingValueCurrent

us-gaap:MarketableSecurities
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:MarketableSecuritiesCurrent
us-gaap:LongtermDebtType
us-gaap:MinimumNetWorthRequiredForCompliance

us-gaap:NotesReceivableRelatedPartiesNoncurrent

us-gaap:OtherLongTermInvestments
us-gaap:StatementClassOfStock
us-gaap:PreferredStockSharesOutstanding
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:PrepaidAdvertising

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:SalesAndExciseTaxPayableCurrentAndNoncurrent
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:TradingSecurities
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:TreasuryStockShares

Tables

  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:CommonStockValue ███▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁0.0040.0040.0040.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.002NA0.002NANA
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock███▆▆▅▄▄▃▃▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁43.88543.87742.7938.56538.56137.80235.34635.13832.20332.04830.63228.14928.13128.07827.89527.84627.79627.72227.63427.63327.63327.58327.24127.2327.22927.17326.90926.898NANA26.48126.47726.47726.4526.24126.237NANA25.877NANA
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:TreasuryStock██▇▇▇▇▆▆▆▆▅▅▅▅▁▁▁▁▁▁▇▇▆▆▆▆▅▅3.5533.5513.3263.3233.3223.3193.23.1973.1963.1823.1353.1323.1313.1152.4632.4632.4482.4282.42.3993.3083.3073.2043.2033.2033.2023.1243.124NANA3.033.033.033.032.9622.96NANA2.862NANA
us-gaap:CommonStockSharesIssued ███▆▆▆▅▅▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁43.88543.87742.7938.56538.56137.80235.34635.13832.20332.04830.63228.14928.13128.07827.89527.84627.79627.72227.63427.63327.63327.58327.24127.2327.22927.17326.90926.89826.87326.77426.48126.47726.47726.4526.24126.23726.23NA25.877NANA
 us-gaap:PreferredStockSharesIssued us-gaap:StatementClassOfStock ostk:SeriesA1PreferredStock███▇▁4.2044.214.213.7020.123NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PreferredStockSharesIssued us-gaap:StatementClassOfStock us-gaap:SeriesBPreferredStock▅▅▅▅▅▅▅███████▁0.3570.3570.3570.3570.3560.3550.3550.5550.5550.5550.5550.5550.5690.5690.000569NANANA0.0NANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CommonStockSharesAuthorized ▁▁▁▁▁▁▁▁▁▁▁▁█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100000.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0NA100.0NANA
us-gaap:PreferredStockSharesAuthorized █████████████▁███████████████████████5.05.05.05.05.05.05.05.05.05.05.05.05.00.0055.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.0NA5.0NANA
us-gaap:CommonStockSharesOutstanding ███▆▆▆▅▅▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁40.33240.32639.46435.24235.23934.48332.14631.94129.00728.86627.49725.01725.024.96325.43225.38325.34825.29425.23425.23424.32524.27624.03724.02724.02623.97123.78523.77423.74923.6523.45123.44723.44723.4223.27923.27723.27NA23.015NANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ██▆▆▆▅▅▄▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁40.5940.15836.57335.24135.22532.3732.11230.27928.90328.56625.10325.00324.99625.2925.5425.35625.34125.2925.26624.68124.39824.3924.39924.28324.1924.33924.4324.44624.28324.01624.06423.75423.46423.41423.27823.27623.26523.215NA23.0623.013
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ██▆▆▆▅▅▄▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁40.32940.15836.57335.24135.22532.3732.11230.27928.90328.56625.10325.00324.99625.2925.39125.35625.34125.2825.23424.68124.30624.21324.03124.02724.00923.92623.7823.76623.71423.59423.4523.44723.43723.39223.27823.27623.26523.215NA23.0623.013
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:StockCompensationPlan▁█0.1680.737NA1.0880.9041.03NA0.4980.550.685NA0.1920.1030.199NA0.7650.890.907NA0.5660.3480.132NA0.4630.4710.226NA0.0060.0360.575NA0.5410.7091.375NA0.9851.02NANANANA
us-gaap:EarningsPerShareBasic ▆▄▄▄▄▄▃▃▃▃▁▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅█▅▅▅▄▅▅▅▅▄▄▅▅▅▅8.5e-07-4.0000000000000003e-07-7.3e-07-8.900000000000001e-07-6.9e-07-1.18e-06-1.3899999999999998e-06-1.55e-06-2.2e-06-1.74e-06-3.7200000000000004e-06-3e-08-2.9e-07-2.3000000000000002e-071.2e-07-1.2e-07-4e-085.3e-070.0-8e-087e-081.1e-076e-087e-088e-081.7000000000000001e-073.09e-061.5e-071.6e-073.3e-07-3.7e-071.1e-072e-081.2e-071.5e-07-3.3e-07-3.4000000000000003e-07-2e-086.5e-07-1.5e-07-6e-08
us-gaap:EarningsPerShareDiluted ▆▄▄▄▄▄▃▃▃▃▁▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅█▅▅▅▄▅▅▅▅▅▅▅▆▅▅8.4e-07-4.0000000000000003e-07-7.3e-07-8.900000000000001e-07-6.9e-07-1.18e-06-1.3899999999999998e-06-1.55e-06-2.2e-06-1.74e-06-3.7200000000000004e-06-3e-08-2.9e-07-2.3000000000000002e-071.2e-07-1.2e-07-4e-085.3e-070.0-8e-087e-081.1e-076e-087e-088e-081.6e-073.01e-061.4e-071.5e-073.2e-07-3.7e-071.1e-072e-081.2e-071.5e-07-3.3e-07-3.4000000000000003e-07-2e-086.4e-07-1.5e-07-6e-08
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▃▃▂▃▃▄▄▄▄▄▃▄▄▅▄▃▃▄▃▃▃▄▃▂▂▃▂▂▂▂▁▁▁▂▁▁▁▂▁▁782.544351.573370.881347.099373.709367.729452.548440.58483.133445.331456.29424.007432.024432.435526.182441.564418.54413.677480.27391.211388.013398.344470.36352.991332.545341.207397.593301.426293.204311.994342.034255.352239.536262.367314.077239.738234.992265.47348.87245.42231.253
us-gaap:RealizedInvestmentGainsLosses ▁▄▃▆▅█▇█-3.545-2.468-2.812-1.864-2.033-1.025-1.365-1.123NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold █▂▃▂▃▃▄▄▄▄▄▄▄▄▅▄▄▃▅▃▃▃▄▃▂▂▃▂▂▂▃▁▁▁▂▁▁▁▃▁▁602.662275.733294.359277.551299.81294.605370.968353.864391.39351.462370.492340.332347.853345.528428.178361.848342.218336.37397.161318.76314.356322.907384.98285.933269.92277.211325.858242.276235.365253.058280.823208.81196.367214.859263.216201.365195.222215.386289.458204.042189.674
us-gaap:GrossProfit █▃▃▃▃▃▃▃▄▄▃▃▃▃▄▃▃▃▃▃▃▃▃▂▂▂▃▂▂▂▂▁▁▁▂▁▁▂▂▁▁179.88275.8476.52269.54873.89973.12481.5886.71691.74393.86985.79883.67584.17186.90798.00479.71676.32277.30783.10972.45173.65775.43785.3867.05862.62563.99671.73559.1557.83958.93661.21146.54243.16947.50850.86138.37339.7750.08459.41241.37841.579
us-gaap:OperatingExpenses ▇▅▅▄▄▅▆▇█▇▅▄▄▄▄▄▃▂▄▃▃▃▃▂▂▂▃▂▂▂▂▁▁▁▂▁▁▁▁▁▁140.839101.984108.08599.67899.677109.142130.024134.548158.279148.263108.51395.5593.90289.2298.34684.76381.83159.49486.19875.82271.57571.59383.67264.70360.83257.92970.20855.69253.67451.52153.31944.76743.1545.03353.04946.31447.18850.07144.26444.55442.86
us-gaap:GeneralAndAdministrativeExpense ▄▅▅▅▅▇██▅▆▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▃▂▂▂▁▁▂▂▂▂▂▂▁▂▂27.37132.42633.24732.68131.96440.23247.9345.35631.4439.75524.09621.65122.36122.6121.45523.31722.67821.84821.54820.67619.42920.53423.52717.07315.88115.29620.52615.9716.58515.08814.09313.82814.51614.82217.73415.32116.72517.98611.49914.74214.503
us-gaap:SellingAndMarketingExpense ▇▃▃▃▃▃▄▅█▇▅▄▄▃▄▃▃▃▃▂▂▂▃▂▂▂▃▂▁▁▂▁▁▁▁▁▁▁▁▁▁79.7936.76240.86834.21534.5633.47747.53755.31294.41677.21454.52145.15343.29737.61848.3834.70733.35331.45638.34730.06228.08727.97237.09825.42823.54323.39231.23322.46319.20818.70520.58114.89913.51214.47518.91113.82213.65515.42517.2515.62614.179
us-gaap:OperatingIncomeLoss █▄▃▃▄▃▂▂▁▂▄▅▅▅▅▅▅▇▅▅▆▆▆▆▆▆▆▆▆▆▆▆▅▆▅▅▅▅▆▅▅39.043-26.144-31.563-30.13-25.778-36.018-48.444-47.832-66.536-54.394-22.715-11.875-9.731-2.313-0.342-5.047-5.50917.813-3.089-3.3712.0823.8441.7082.3551.7936.0671.5273.4584.1657.4157.8921.7750.0192.475-2.188-7.941-7.4180.01315.148-3.176-1.281
us-gaap:InterestExpense ▆▃▁▂▂▂▂▂▄█▇▇▇▇▆▃▁▁▂▂▁▁▁▁▁▁▁▁▁▁▂▃▃▃▅▆▆▆▇▆▇0.5880.20.0530.0570.1050.1270.0980.1010.3950.8740.7980.7130.7160.710.6580.2120.0050.0020.0660.0620.0080.0040.0090.0110.0120.007-0.0080.0330.0370.0510.1540.1940.2530.2080.5170.6620.630.6760.7320.6680.76
us-gaap:InterestPaidNet ▅▁▁▁▁▁▁▂▃▇█0.5560.0320.0460.0450.0870.0860.0870.1190.3240.7890.96NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▂█▅▂▃▁▃▃▅▄▄█▅▂▇▅▇▇▅▅▅▅▅▄▅▅▄▄▄▅▅▅▅▅▄▅▅▄-4.1716.6831.547-4.781-2.995-6.272-1.999-1.8480.368-0.009-1.5735.8820.593-3.7244.7821.2513.9924.1561.1020.7641.1630.6050.536-0.350.5240.459-0.5950.165-0.150.3451.3221.2130.7190.432-0.6840.5530.220.189NANANA
us-gaap:AllocatedShareBasedCompensationExpense ▃▄▆▆▆▅▃▃▄█▂▁▁▁▁▂▂▁▁▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂2.4653.2684.6064.4675.1713.9852.7022.2462.9736.4351.0681.0241.0450.940.7861.391.7470.9680.9490.8390.960.7781.0860.9981.0280.9230.8740.8090.8160.7520.9030.980.830.8130.640.7010.8320.8761.2861.2861.27
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments █▄▄▃▄▃▂▂▁▂▄▅▅▅▆▅▅▇▅▅▆▆▆▆▆▆▆▆▆▆▆▆▆▆▅▅▅▆▇▅▅34.898-19.389-29.754-34.519-28.248-42.014-49.88-49.398-65.943-54.733-24.877-6.517-9.718-6.6223.88-3.935-1.45822.058-2.016-2.6323.2754.4882.2732.032.3426.560.9673.6244.017.7439.092.8240.5122.728-3.349-8.027-7.782-0.42215.14-3.402-1.349
us-gaap:NonoperatingIncomeExpense ▂█▅▂▃▁▄▃▅▄▃▇▄▂▇▅▇▇▅▅▅▅▅▄▅▅▄▄▄▄▅▅▅▄▄▄▄-4.1456.7551.809-4.389-2.47-5.996-1.436-1.5660.593-0.339-2.1625.3580.013-4.3094.2221.1124.0514.2451.0730.7391.1930.6440.565-0.3250.5490.493-0.560.166-0.1550.3281.1981.0490.4930.253-1.161-0.086-0.364NANANANA
 us-gaap:NonoperatingIncomeExpense us-gaap:ConsolidationItems us-gaap:IntersegmentElimination▅▄▄▃▂▁▂▂▂█▄▁▁▁1.21.11.00.7390.4910.4150.50.5390.5042.00.9320.4030.3590.306NA0.06NANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NonoperatingIncomeExpense us-gaap:StatementBusinessSegments ostk:MVI▁█-2.768.833NA-4.057-2.847-5.164NA-1.147NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NonoperatingIncomeExpense us-gaap:StatementBusinessSegments ostk:TZero.comInc.▂▁█▃▄▂▃▃▃▄-1.268-1.7823.54-0.4750.34-0.963-0.280.096-0.0360.453NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NonoperatingIncomeExpense us-gaap:StatementBusinessSegments us-gaap:AllOtherSegments████▄▁▇▆▆█▆██▂████0.00.003-0.0070.006-2.85-5.168-0.539-1.051-1.0310.116-1.352-0.0170.0-4.4110.001-0.0650.0640.0NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NonoperatingIncomeExpense us-gaap:StatementBusinessSegments us-gaap:Retail▄▃▄▄▄▄▁▃█-0.117-0.2990.2470.1370.040.135-1.13-0.5151.624NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▅▅▅▅▄▅▄▅▅▅█▄▄▅▅▄▅▅▄▅▅▅▅▅▅▅▁▅▅▅▅▅▅▅▅▅▅▅▅▅▅0.5170.176-0.0940.023-0.6220.878-1.939-0.141-0.027-0.27771.915-5.412-1.975-0.341.119-0.543-0.2438.964-1.879-0.0151.8491.940.9680.4130.4332.59-72.6140.0910.3120.0460.3030.1310.0420.0090.06-0.240.0160.0220.281-0.044-0.007
us-gaap:IncomeTaxesPaidNet █▁0.0610.004NANA-0.5990.13NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▇▄▄▄▄▃▃▃▂▃▁▅▅▅▅▅▅▆▅▅▅▅▅▅▅▅█▅▅▅34.381-19.565-29.66-34.542-27.626-42.892-47.941-49.257-65.916-54.456-96.792-1.105-7.743-6.2822.761-3.392-1.21513.094-0.137-2.6171.4262.5481.3051.6171.9093.9769.453.5333.6987.697NANANANANANA-7.798NANANA-1.342
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▄▄▄▄▄▄▄▄▄▄▆▄▄▄█▄▂▁▄▁▅▂▂▄▄▄0.0040.0040.0040.0040.0040.0040.0030.0040.0040.0040.8210.052-0.0810.1491.514-0.064-0.54-1.020.213-0.9070.588-0.703-0.6210.00.00.0NANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▆▄▅▄▄▃▁▆▇▄▇████████▇██████-1.975-3.232-2.682-3.604-2.945-3.648-5.614-1.334-1.005-3.547-1.102-0.319-0.244-0.379-0.334-0.294-0.311-0.335-0.247-0.546-0.242-0.191-0.0530.00.00.0NANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest █▅▅▄▅▄▄▄▃▃▁▆▆▆▆▆▆▇▆▆▆▆▆▆▆▆34.385-19.561-29.656-34.538-27.622-42.888-47.938-49.253-65.912-54.452-95.971-1.053-7.824-6.1334.275-3.456-1.75512.0740.076-3.5242.0141.8450.6841.6171.9093.97NANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▆▄▄▄▄▃▃▃▂▃▁▅▅▅▅▅▅▆▅▅▅▅▅▅▅▅█▅▅▅▅▅▅▅▅▅▅▅▆▅36.356-16.333-26.978-30.938-24.681-39.244-42.327-47.923-64.911-50.909-95.69-0.786-7.499-5.9033.095-3.098-0.90413.4290.11-2.0711.6682.7391.3581.6171.9093.9773.5813.5333.6987.6978.7872.6930.472.719-3.409-7.787-7.798-0.44414.859-3.358NA
us-gaap:ComprehensiveIncomeNetOfTax ▆▄▄▄▄▃▃▃▂▃▁▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅█▅▅▅▅▅▅▅▅▅▅▅36.36-16.329-26.974-30.934-24.677-39.24-42.324-47.919-64.907-50.905-94.869-0.734-7.58-5.7544.609-3.162-1.44412.4090.323-2.9782.2562.0360.7371.6171.9093.9773.5813.5333.6987.6978.7872.6930.472.719-3.409-7.787-7.798-0.444NANANA
us-gaap:PreferredStockDividendsIncomeStatementImpact █▁0.1790.019NA0.8370.0190.019NA0.0270.0270.027NA0.0270.0270.027NA0.00.0NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic █▅▅▄▅▄▄▄▃▃▁▆▆▆▆▆▆▇▆▆▆▆34.138-16.158-26.651-31.347-24.367-38.269-44.782-46.895-63.443-49.75-93.252-0.791-7.322-5.9033.095-3.098-0.90413.4290.11-2.0711.6682.739NA1.6171.9093.9773.5813.5333.6987.6978.7872.6930.472.719-3.409-7.787-7.8-0.45414.846-3.381-1.405
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▆▄▅▄▄▃▁▆▇▄▇████████▇██████████-1.975-3.232-2.682-3.604-2.945-3.648-5.614-1.334-1.005-3.547-1.102-0.319-0.244-0.379-0.334-0.294-0.311-0.335-0.247-0.546-0.242-0.191-0.0530.00.00.00.00.00.00.0NANANANANANANANANANANA
 us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents us-gaap:NoncontrollingInterest▂▁▁▁▁▁█▂▂▁▂▂▂▂▁▂▂▂▁▃▂▂-1.975-3.232-2.682-3.604-2.945-3.64817.386-1.334-1.005-3.547-1.102-0.319-0.244-0.379-2.2140.2940.3110.335-2.2051.412-0.242-0.191NANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 COGS Ratio us-gaap:StatementBusinessSegments ostk:MVI█▁2.8511.574NA0.6390.6830.608NA0.467NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:StatementBusinessSegments ostk:ParentAndOtherSegment█▁15.58811.975NA6.3016.2345.104NA4.8055.45NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:StatementBusinessSegments ostk:TZero.comInc.█▆▂▂▂▁▂▁▁▁12.73710.2395.8735.6625.5514.4964.9634.3384.894.852NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:StatementBusinessSegments us-gaap:AllOtherSegmentsNA0.1626.805NA0.6835.1045.815NA0.565.335NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:StatementBusinessSegments us-gaap:Retail█▁▁▁▁▁▃▃▃▃766.956339.598364.076340.798367.475362.625446.733435.775477.683439.996NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Gross Margin us-gaap:StatementBusinessSegments ostk:MVI█▁2.8511.574NA0.6390.6830.608NA0.467NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Gross Margin us-gaap:StatementBusinessSegments ostk:TZero.comInc.█▆▂▂▂▁▂▁▁▁12.73710.2395.8735.6625.5514.4964.9634.3384.894.852NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Gross Margin us-gaap:StatementBusinessSegments us-gaap:AllOtherSegmentsNA0.1626.805NA0.6835.1045.815NA0.565.335NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Gross Margin us-gaap:StatementBusinessSegments us-gaap:Retail█▁▁▁▁▁▃▃▃766.956339.598364.076340.798367.475362.625446.733435.775477.683NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:Assets █▅▅▅▅▅▅▆▅▆▅▅▅▅▆▅▅▅▅▄▄▄▄▃▃▃▄▂▁▁▂▁▁▁▂▁▁645.142456.735417.727399.801449.174452.889461.219501.467452.893526.274433.815395.441412.875441.301485.076424.276414.822392.058429.129331.806320.77320.398376.865298.37276.529280.578319.767179.438171.326165.226181.985153.668137.733141.715179.559157.975162.806NA217.959NANA
us-gaap:Liabilities █▅▄▃▄▄▄▄▄▄▄▄▄▄▅▄▄▃▄▂▂▃▄▂▂▂▃▁▁▁▂▁▁▁▂▁▁441.794295.08239.872230.849250.094243.327250.513243.422254.785270.181261.692235.555252.944274.328312.116264.684253.029229.963279.768183.469187.855190.621247.645170.05147.761154.913196.876131.102127.804127.204151.023132.389120.128125.41166.322141.967139.712NA186.731NANA
us-gaap:LiabilitiesAndStockholdersEquity █▅▅▅▅▅▅▆▅▆▅▅▅▅▆▅▅▅▅▄▄▄▄▃▃▃▄▂▁▁▂▁▁▁▂▁▁645.142456.735417.727399.801449.174452.889461.219501.467452.893526.274433.815395.441412.875441.301485.076424.276414.822392.058429.129331.806320.77320.398376.865298.37276.529280.578319.767179.438171.326165.226181.985153.668137.733141.715179.559157.975162.806NA217.959NANA
us-gaap:StockholdersEquity ▆▅▅▅▆▆▆█▆██▇▇██▇▇▇▇▇▆▆▆▆▆▆▆▂▂▂▂▁▁▁▁▁139.411100.279115.084103.455127.294134.831131.746170.794120.39179.861175.628163.194162.92169.718175.326161.624163.531163.522150.453149.182133.176129.891129.238128.32128.768125.665122.89148.33643.52238.02230.96221.27917.60516.30513.23716.008NANA30.658NANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AssetsCurrent █▃▃▂▃▃▄▅▄▆▅▂▂▃▅▃▃▃▄▂▃▃▅▃▂▃▄▂▂▂▂▁▁▁▂▁▁400.206210.884177.363133.681178.632184.953215.267255.16223.138317.234265.197150.982161.702190.638260.641195.415194.37196.876248.463151.727184.434195.066258.062184.143171.1176.39219.291139.035140.525133.638155.998125.157110.051113.794149.193125.845130.413NA185.97NANA
us-gaap:CashAndCashEquivalentsAtCarryingValue █▃▂▂▃▃▃▄▃▆▅▂▂▃▄▃▃▃▄▂▂▃▄▂▂▂▃▂▂▂▂▁▁▁▂▂▂▂▃▁▁318.573141.26112.26683.546121.294119.632141.512182.042152.228259.569203.21592.266103.952136.415183.098124.471122.566128.189170.26281.268105.471124.322181.641112.74101.878110.647148.66584.86284.73781.89593.54772.46959.99872.10596.98579.13882.68100.276124.02176.40876.008
us-gaap:AccountsReceivableNetCurrent █▆▄▄▄▅▆▅▅▄▅▄▃▄▅▃▃▃▃▃▃▃▃▂▃▃▃▂▂▃▃▂▂▂▂▁▁47.76537.66424.72822.40723.63530.81935.9330.55228.59721.79830.0824.32820.75121.61528.14221.04519.30519.02516.12816.95115.84315.65118.96314.94115.62815.83616.04714.67214.58215.85119.27314.0210.08411.94113.5018.4456.642NA13.56NANA
us-gaap:InventoryNet ▂▁▁▂▃▄▄▅▄▃▄▄▄▅▅▄▅▆▆▇█▇█▇▆▇█▇▆▆█▆▆▅▇▅▆6.344.6785.847.24411.87713.55414.10817.30815.35512.47113.70313.56215.15217.72618.93715.71717.51819.43920.04223.20627.52824.46726.20825.28320.20222.77327.04322.73320.98921.53526.46421.3921.07416.64522.99319.2121.07NA32.114NANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▇▆▅▅▅▅▇▇█▇▄▅▆▂▂▅▄▂▃▄▅▂▂▃▄▁▁▃▄▂▃▃▄▁▃▄▄22.76920.78318.47818.23319.51318.46522.41523.86325.41922.09116.11918.49820.08911.78911.65417.47517.25810.98213.98516.83317.6210.92812.62114.14316.0910.03510.29813.06216.78510.58912.89713.5515.0979.1412.65115.25415.949NA11.651NANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:PropertyPlantAndEquipmentGross 359.064NA351.815NANANA339.589NANANA315.778NANANA314.86NANANA250.522NANANA191.606NANANA191.698NANANA171.777NANANA160.825NANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █▇▇▇▆▆▅▅▅▄▄▅▅▄▃▃▂▂▁232.269226.4221.787219.8215.1209.0204.902202.3198.4192.3186.435201.6194.7187.6180.308174.3169.2162.9156.826NANANA139.535NANANA164.504NANANA150.74NANANA135.503NANANANANANA
us-gaap:AmortizationOfIntangibleAssets NA0.9231.1231.0421.1231.4811.691.5461.1330.9181.160.9480.9460.9450.8071.01.11.0981.1650.3540.0320.03NANANANANANANANANANANANANANANANANANANA
 us-gaap:AmortizationOfIntangibleAssets us-gaap:IncomeStatementLocation ostk:Technology▄▄█▅▆▄▅▅▅▂▅▅▅▅▂▁▂▂0.8460.8471.0390.8960.9380.8530.890.8850.8950.7550.9050.9050.9050.9050.7530.6990.7260.726NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AmortizationOfIntangibleAssets us-gaap:IncomeStatementLocation us-gaap:GeneralAndAdministrativeExpense▅▅▅▅▅▁█▇▅▅▆▅▅▅▄▅▅▅0.0620.0650.0680.1330.17-0.830.7820.5420.0340.0440.2340.0210.0210.02-0.0370.0270.0440.022NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AmortizationOfIntangibleAssets us-gaap:IncomeStatementLocation us-gaap:SellingAndMarketingExpense▁▁▁▁▁▁▁▃▅▃▁▁▁▁▂▆██0.010.0110.0160.0160.0160.0160.0180.1190.2040.1190.0210.0220.020.020.0590.2460.3540.35NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ▇▇███████▇██████▇▆▅▄▄▃▃▃▂▂▁▁▁▁▁▁▁▁▁▁▁126.795126.621130.028132.696131.633131.656134.687133.425131.923126.765129.343131.981134.563137.296134.552136.594126.344106.86993.69678.80765.95654.94752.07147.62235.00233.41727.19426.89225.54125.93721.03723.08423.2523.34525.32227.08527.645NA27.8NANA
us-gaap:LongTermInvestments ▄▆▁▁▂▄█▇▂50.54253.8442.04341.71343.75748.46660.42757.43643.543NA13.023NANANA11.75NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill ██████▇▇▇▇▄▄▄▄▄▄▄▄▅▅▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁27.1227.1227.1227.1227.1225.43422.89522.05822.05822.05814.69814.69814.69814.69814.69814.69814.69814.33515.38715.3432.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.784NA2.784NANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▂▂▃▃▄▅▃██▇▁▁▂▂▂▃▃▃▄▄9.91910.83711.75612.87915.47417.24313.3725.1426.34324.6537.3378.2889.17110.09910.91311.68812.68113.78314.65615.434NANA0.0NANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▅▅▅██▇▁23.38723.72625.38443.26645.06637.2620.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▂▁▁▂▂▂▄▂▂█▄▄▄▃▄▃▄▃▃▃▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁7.1733.7074.0338.4467.4927.87514.4648.1135.88835.56417.2414.99214.39912.27314.32812.67315.16310.8559.3149.589.8127.8092.7121.9431.7771.8292.0232.1672.4762.8672.1662.6431.6481.7922.262.2611.964NA1.405NANA
us-gaap:EquitySecuritiesFvNi ▂▁▄▄█0.50.4140.8230.8181.518NA2.636NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:LiabilitiesCurrent █▄▄▃▄▃▅▄▅▄▄▃▃▄▅▄▄▃▅▃▃▃▅▃▂▂▃▂▁▁▂▂▁▁▂▁▁374.033228.648215.999186.723203.842202.028241.486234.419245.556223.665214.663175.665192.014212.564249.216207.944202.903194.406258.771176.089181.648183.733242.802166.162143.811150.916193.582129.955126.421125.155148.501129.624117.697122.778163.322107.445122.455NA171.224NANA
us-gaap:AccountsPayableCurrent █▄▄▃▃▄▆▅▅▅▅▃▄▅▆▄▄▄▇▃▃▃▇▃▂▃▅▂▂▂▃▁▁▁▃▁▁131.10174.25475.41660.55770.85774.658102.57493.27792.71289.66685.40670.54375.73686.089106.33784.91278.93479.127122.70564.95568.17866.993112.78763.14156.69262.21990.58254.68549.49846.75362.41643.30240.62542.80470.33242.55238.838NA67.311NANA
us-gaap:OtherAccruedLiabilitiesCurrent █▆▅▃▄▂▁▁█▃▂▂▂▂▆14.08910.8629.7147.3578.3915.784.274.95414.117.1936.2836.3074.986.17611.108NANANA13.62NANANA13.497NANANA9.934NANANA4.034NANANA3.416NANANANANANA
us-gaap:AccruedLiabilitiesCurrent █▅▅▄▄▄▄▅▆▅▄▃▄▄▅▄▄▃▄▃▃▄▄▃▂▂▃▂▂▂▂▂▁▁▂▁▁144.1188.45788.19779.4482.7181.22487.858100.753109.73292.10582.61158.78472.29681.41796.21677.95776.3169.76283.38764.85867.1372.99881.56462.3750.89151.85465.67945.41247.06446.87147.67440.50835.80936.12747.90237.68432.222NA40.751NANA
us-gaap:OperatingLeaseLiabilityCurrent ▁▆█▅▅4.7855.9686.6035.7255.731NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent ▆█▆▁▁▁▁▁▁▁▁▃▃▃▃4.3325.8263.9620.4890.4860.4820.4760.4720.4680.1820.1781.5071.5481.6041.627NANANA0.581NANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:LongTermDebt ██▁▁▁▁▁▁▁42.94843.7390.00.00.03.0983.0693.0693.069NA0.043.40643.66343.92144.17939.50231.96919.7039.488NANANA0.0NANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▆▆▆▆▇▇▇█▇▇▁▁▁▁▁▁▁▁▁▁▁▁▁63.93761.37662.77165.49771.78674.73178.9687.25177.71876.232-3.505-3.308-2.989-2.745-2.366-2.032-1.738-1.427-1.092-0.845-0.261-0.114-0.018NANANA0.0NANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▃▂▂▁▂▂▅▅▅▆▆▆▆▆▆███▆▆▅▆▄▃▃▃▃▁▁▂▂▂▂▂▃▃▃4.0222.2842.3191.6162.1472.0935.9585.9346.166.5397.127.1597.0996.846.899.1649.5158.9246.9747.386.2076.8884.8433.8883.953.9973.2941.1471.3832.0492.5222.7652.4312.632.9983.0343.223NA3.175NANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▁▁▁██20.79120.40921.55442.5144.105NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:StockholdersEquity ▆▅▅▅▆▆▆█▆██▇▇██▇▇▇▇▇▆▆▆▆▆▆▆▂▂▂▂▁▁▁▁▁139.411100.279115.084103.455127.294134.831131.746170.794120.39179.861175.628163.194162.92169.718175.326161.624163.531163.522150.453149.182133.176129.891129.238128.32128.768125.665122.89148.33643.52238.02230.96221.27917.60516.30513.23716.008NANA30.658NANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▅▃▄▃▅▅▅█▅█▃▃▃▃▃▃▃▃▂▂▁▁▁203.348161.655177.855168.952199.08209.562210.706258.045198.108256.093172.123159.886159.931166.973172.96159.592161.793162.095149.361148.337132.915129.777129.22NANANA118.76NANANA30.962NANANANANA22.985NA30.658NANA
us-gaap:CommonStockValue ███▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁0.0040.0040.0040.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.002NA0.002NANA
us-gaap:AdditionalPaidInCapital ███▇▇▇▆▆▄▄▃▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁770.984768.055764.845726.132719.01701.877657.981651.482553.112547.184494.732387.195385.987384.942383.348374.152372.762371.015370.047369.099368.26367.223366.252364.997363.999362.8361.706360.73359.449357.647356.895355.992355.011354.181353.368352.728351.916NA349.747NANA
us-gaap:RetainedEarningsAccumulatedDeficit ▂▁▁▂▂▃▃▄▅▆▆████████████████▇▇▇▆▆▆▆▆▆▆-560.48-596.723-580.39-553.335-522.397-497.716-458.897-413.395-365.472-300.561-254.692-158.893-157.926-150.427-153.898-156.993-153.895-152.991-166.42-166.53-149.457-151.125-153.864-154.148-152.708-154.617-158.587-232.168-235.701-239.399-247.096-255.883-258.576-259.046-261.765-258.356-250.569NA-242.327NANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ███████████▆▅▆▅▁▁▃▆▅█▆█-0.56-0.564-0.568-0.572-0.576-0.58-0.584-0.587-0.591-0.595-0.599-1.42-1.472-1.391-1.54-3.054-2.99-2.45-1.43-1.643-0.736-1.324-0.621NANANA0.0NANANANANANANANANANANANANANA
us-gaap:TreasuryStockValue ▅▅▅▅▅▅▄▄▄▄▄▄▄▃▁▁▁▁▁▁████▇▇▇▇▇▇▇▇▇▇▇▇▇70.53770.49368.80768.77368.74668.75366.75766.70966.66266.1763.81663.69163.67263.40952.58752.48452.34952.05551.74751.74784.89384.88582.53182.53182.52582.5280.2380.22880.22880.22878.83978.83278.83278.83278.36878.36678.364NA76.764NANA
us-gaap:MinorityInterest ▆▆▆▆▇▇▇█▇▇▁▁▁▁▁▁▁▁▁▁▁▁▁63.93761.37662.77165.49771.78674.73178.9687.25177.71876.232-3.505-3.308-2.989-2.745-2.366-2.032-1.738-1.427-1.092-0.845-0.261-0.114-0.018NANANA0.0NANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities █▂▃▂▂▁▂▁▁▂▄▂▂▂▄182.67-12.2277.583-23.343-14.423-51.429-18.634-49.721-60.397-10.18227.334-16.398-23.16-23.09755.003NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▆▅▆▆▇▄▄▄▁▇█▆▅▅-1.979-5.999-12.593-11.144-4.8891.774-21.415-24.858-22.7-41.95-3.5925.635-7.514-12.489-14.281NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▅▄▂▃▄▂█▁█▇▂▂▂▃-3.40247.24934.111-3.32320.80428.956-0.574105.32-24.223108.47887.207-1.036-1.601-11.17217.905NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect █▁177.28929.023NA-37.811.492-20.699NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities █▂▃▂▂▁▂▁▁▂▄▂▂▂▄182.67-12.2277.583-23.343-14.423-51.429-18.634-49.721-60.397-10.18227.334-16.398-23.16-23.09755.003NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▆▄▄▄▄▃▃▃▂▃▁▅▅▅▅▅▅▆▅▅▅▅▅▅▅▅█▅▅▅▅▅▅▅▅▅▅▅▆▅36.356-16.333-26.978-30.938-24.681-39.244-42.327-47.923-64.911-50.909-95.69-0.786-7.499-5.9033.095-3.098-0.90413.4290.11-2.0711.6682.7391.3581.6171.9093.9773.5813.5333.6987.6978.7872.6930.472.719-3.409-7.787-7.798-0.44414.859-3.358NA
us-gaap:ProfitLoss ▇▄▄▄▄▃▃▃▂▃▁▅▅▅▅▅▅▆▅▅▅▅▅▅▅▅█▅▅▅34.381-19.565-29.66-34.542-27.626-42.892-47.941-49.257-65.916-54.456-96.792-1.105-7.743-6.2822.761-3.392-1.21513.094-0.137-2.6171.4262.5481.3051.6171.9093.9769.453.5333.6987.697NANANANANANA-7.798NANANA-1.342
us-gaap:IncreaseDecreaseInAccountsReceivable █▇▄▄▅▁▆▅▆▂▆▅▄▃▆▅▅▅▄▅▅▄▆▄▅▅▅▅▄▄▆▆▄▄▆▅▄▃▆▅13.51111.141-0.527-0.5631.773-14.0685.4851.9556.4-8.2825.7523.577-0.864-6.5277.0971.740.2180.951-0.8010.4580.192-3.3124.022-0.687-0.208-0.2111.3750.09-1.269-3.4225.2533.936-1.857-1.565.0561.803-1.239-5.6795.1720.103NA
us-gaap:IncreaseDecreaseInInventories ▆▅▅▃▄▅▄▆▅▅▅▅▄▅▆▄▄▅▄▄▆▄▅▇▄▄▇▆▅▃▇▅▇▃▆▄▅▁▄█1.662-1.162-1.404-4.633-1.677-0.554-2.4611.9531.112-1.2320.141-1.59-2.574-1.2113.22-1.801-1.921-0.603-3.164-4.3223.061-1.7410.9255.081-2.571-4.274.311.744-0.546-4.9295.0740.3164.429-6.3483.783-1.860.907-11.951-2.2798.667NA
us-gaap:ShareBasedCompensation ▃▄▆▆▆▅▃▃▄█▂▁▁▁▁▂▂▁▁▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂2.4653.2684.6064.4675.1713.9852.7022.2462.9736.4351.0681.0241.0450.940.7861.391.7470.9680.9490.8390.960.7781.0860.9981.0280.9230.8740.8090.8160.7520.9030.9810.830.8130.640.7030.8320.8761.2861.285NA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▆▅▆▆▇▄▄▄▁▇█▆▅▅-1.979-5.999-12.593-11.144-4.8891.774-21.415-24.858-22.7-41.95-3.5925.635-7.514-12.489-14.281NANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▅▄▂▃▄▂█▁█▇▂▂▂▃-3.40247.24934.111-3.32320.80428.956-0.574105.32-24.223108.47887.207-1.036-1.601-11.17217.905NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▁█0.047.5NANA0.00.00.00.00.00.040.00.00.00.04.8267.79512.52911.1239.4880.00.00.0NANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType ostk:LoanCoreCapitalFundingCorporation,ostk:MezzanineNoteNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType ostk:LoanCoreCapitalFundingCorporation,ostk:SeniorandMezzanineBlendedRateNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType ostk:LoanCoreCapitalFundingCorporation,us-gaap:SeniorNotesNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType,us-gaap:SubsequentEventType ostk:LoanCoreCapitalFundingCorporation,us-gaap:LongTermDebt,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4000.04000.04000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockValue us-gaap:StatementEquityComponents

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value4000.04000.04000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.02000.02000.02000.02000.02000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:SharesOutstanding us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-312008-12-31
Value43434238383735353232302828282727272727272727272727272626262626262626252525
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-312008-12-31
Value3.5533.5513.3263.3233.3223.3193.23.1973.1963.1823.1353.1323.1313.1152.4632.4632.4482.4282.42.3993.3083.3073.2043.2033.2033.2023.1243.1243.033.033.033.032.9622.962.8622.8072.793
Percentage of SharesOutstanding8.18.17.88.68.68.89.19.19.99.910.211.111.111.18.88.88.88.88.78.712.012.011.811.811.811.811.611.611.411.411.411.511.311.311.111.011.0

None

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4343423838373535323230282828272727272727272727272727262626262626262626262625
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:PreferredStockSharesIssued us-gaap:StatementClassOfStock

us-gaap:PreferredStockSharesIssued

ostk:SeriesA1PreferredStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value4204000.04210000.04210000.03702000.0123000.00
Percentage of PreferredStockSharesIssued100.0100.0100.0100.0100.00.0

us-gaap:SeriesBPreferredStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value357000.0357000.0357000.0357000.0356000.0355000.0355000.0555000.0555000.0555000.0555000.0555000.0569000.0569000.0569.00
Percentage of PreferredStockSharesIssued8.58.58.59.6289.40.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value100100100100100100100100100100100100100000100100100100100100100100100100100100100100100100100100100100100100100100100
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:PreferredStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.0
Percentage of PreferredStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4040393535343231292827252524252525252525242424242423232323232323232323232323
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value40403535343129
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value40403635353232302828252524252525252525242424242424242424242424232323232323232323
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value40403635353232302828252524252525252525242424242424232323232323232323232323232323
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:StockCompensationPlan


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value168000.0737000.01088000.0904000.01030000.0498000.0550000.0685000.0192000.0103000.0199000.0765000.0890000.0907000.0566000.0348000.0132000.0463000.0471000.0226000.06000.036000.0575000.0541000.0709000.01375000.0985000.01020000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.85-0.4-0.73-0.89-0.69-1.18-1.39-1.55-2.2-1.74-3.72-0.03-0.29-0.230.12-0.12-0.040.530-0.080.070.110.060.070.080.173.090.150.160.33-0.370.110.020.120.15-0.33-0.34-0.020.65-0.15-0.06
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.84-0.4-0.73-0.89-0.69-1.18-1.39-1.55-2.2-1.74-3.72-0.03-0.29-0.230.12-0.12-0.040.530-0.080.070.110.060.070.080.163.010.140.150.32-0.370.110.020.120.15-0.33-0.34-0.020.64-0.15-0.06
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value782351370347373367452440483445456424432432526441418413480391388398470352332341397301293311342255239262314239234265348245231
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

ostk:MVI


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value2.8511.5740.6390.6830.6080.467
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.40.20.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.40.20.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:MVI100.0100.0100.0100.0100.0100.0

ostk:ParentAndOtherSegment


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value15116.3016.2345.1044.8055.45
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.03.41.81.71.41.11.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.03.41.81.71.41.11.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:ParentAndOtherSegment100.0100.0100.0100.0100.0100.0100.0

ostk:TZero.comInc.


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value12105.8735.6625.5514.4964.9634.3384.894.852
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.62.91.61.61.51.21.11.01.01.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.62.91.61.61.51.21.11.01.01.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:TZero.comInc.100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllOtherSegments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.1626.8050.00.6835.1045.8150.00.565.335
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.01.80.00.21.41.30.00.11.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.01.80.00.21.41.30.00.11.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.0100.0100.00.0100.0100.0100.00.0100.0100.0

us-gaap:Retail


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value766339364340367362446435477439
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.096.698.298.298.398.698.798.998.998.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.096.698.298.298.398.698.798.998.998.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Retail100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:RealizedInvestmentGainsLosses

us-gaap:RealizedInvestmentGainsLosses


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-3545000.0-2468000.0-2812000.0-1864000.0-2033000.0-1025000.0-1365000.0-1123000.0
Percentage of RealizedInvestmentGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5-0.7-0.8-0.5-0.5-0.3-0.3-0.3

None

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value602275294277299294370353391351370340347345428361342336397318314322384285269277325242235253280208196214263201195215289204189
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax77.078.479.480.080.280.182.080.381.078.981.280.380.579.981.481.981.881.382.781.581.081.181.881.081.281.282.080.480.381.182.181.882.081.983.884.083.181.183.083.182.0

us-gaap:CostOfGoodsAndServicesSold us-gaap:StatementBusinessSegments

ostk:MVI


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value2.8491.5740.6390.6830.6080.467
Percentage of CostOfGoodsAndServicesSold0.50.60.20.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.40.20.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:MVI99.9100.0100.0100.0100.0100.0

ostk:ParentAndOtherSegment


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value13105.0064.8263.9653.2134.138
Percentage of CostOfGoodsAndServicesSold2.33.81.81.61.30.91.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.72.91.41.31.10.70.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:ParentAndOtherSegment87.486.479.477.477.766.975.9

ostk:TZero.comInc.


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value108.7674.6844.3674.1433.3573.4042.7463.5783.399
Percentage of CostOfGoodsAndServicesSold1.83.21.61.61.41.10.90.80.91.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.42.51.31.31.10.90.80.60.70.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:TZero.comInc.84.585.679.877.174.674.768.663.373.270.1

us-gaap:AllOtherSegments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.00.05.5030.00.6830.6084.2563.2134.1383.8822.9312.6342.8143.2683.4532.5872.4971.6670.00.00.00.0
Percentage of CostOfGoodsAndServicesSold0.00.01.90.00.20.21.10.91.11.10.80.80.80.90.80.70.70.50.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.01.50.00.20.20.90.70.90.90.60.60.70.80.70.60.60.40.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.00.080.90.0100.011.973.20.0738.972.80.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Retail


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value589265288272294290366350387347
Percentage of CostOfGoodsAndServicesSold97.796.298.198.298.498.798.999.198.998.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax75.375.577.978.578.979.081.079.680.278.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Retail76.878.179.380.080.380.182.180.581.179.0

None

us-gaap:GrossProfit

us-gaap:GrossProfit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value17975766973738186919385838486987976778372737585676263715957586146434750383950594141
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.021.620.620.019.819.918.019.719.021.118.819.719.520.118.618.118.218.717.318.519.018.918.219.018.818.818.019.619.718.917.918.218.018.116.216.016.918.917.016.918.0

us-gaap:GrossProfit us-gaap:StatementBusinessSegments

ostk:MVI


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value0.0020.00.00.00.00.0
Percentage of GrossProfit0.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:MVI0.10.00.00.00.00.0

ostk:TZero.comInc.


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.9681.4721.1891.2951.4081.1391.5591.5921.3121.453
Percentage of GrossProfit1.11.91.61.91.91.61.91.81.41.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.40.30.40.40.30.30.40.30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:TZero.comInc.15.514.420.222.925.425.331.436.726.829.9

us-gaap:AllOtherSegments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.00.1620.1130.00.00.0-4.3571.5921.3121.4531.3631.3091.2551.0781.2121.3381.271.091.930.00.00.0
Percentage of GrossProfit0.00.20.10.00.00.0-5.31.81.41.51.61.61.51.21.21.71.71.42.30.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0-1.00.40.30.30.30.30.30.20.20.30.30.30.40.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.0100.01.70.00.00.0-74.90.0234.327.20.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Retail


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1777475687271808590
Percentage of GrossProfit98.997.898.398.198.198.498.198.298.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.721.120.319.719.419.617.719.318.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Retail23.221.920.720.019.719.917.919.518.9

None

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1401011089999109130134158148108959389988481598675717183646057705553515344434553464750444442
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.029.029.128.726.729.728.730.532.833.323.822.521.720.618.719.219.614.417.919.418.418.017.818.318.317.017.718.518.316.515.617.518.017.216.919.320.118.912.718.218.5

us-gaap:OperatingExpenses us-gaap:StatementBusinessSegments

ostk:MVI


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value2.5432.9084.4272.9034.2531.845
Percentage of OperatingExpenses1.82.94.42.93.91.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.81.30.81.20.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:MVI89.2184.8692.8425.0699.5395.1

ostk:TZero.comInc.


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value111213141115137.2355.92719
Percentage of OperatingExpenses8.012.012.514.211.814.310.75.43.713.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.43.53.64.13.14.23.11.61.24.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:TZero.comInc.88.1119.7229.9249.3211.5345.9279.8166.8121.2411.4

us-gaap:AllOtherSegments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2.0893.9833.5883.4966.3388.253-23.5559.9778.842227.324.9584.5774.6824.1794.2664.2064.114
Percentage of OperatingExpenses1.53.93.33.56.47.6-18.17.45.615.36.75.24.95.24.25.05.16.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.31.11.01.01.72.2-5.22.31.85.11.61.21.11.10.81.01.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.02458.652.70.0928.0161.7-405.10.01578.9426.10.00.00.00.00.00.00.00.0

us-gaap:Retail


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1248287778185106124149
Percentage of OperatingExpenses88.781.281.277.981.978.282.092.694.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.023.623.722.421.823.223.528.330.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Retail16.324.424.122.822.223.523.928.631.3

None

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2732333231404745313924212222212322212120192023171515201516151413141417151617111414
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.59.29.09.48.610.910.610.36.58.95.35.15.25.24.15.35.45.34.55.35.05.25.04.84.84.55.25.35.74.84.15.46.15.65.66.47.16.83.36.06.3

None

us-gaap:SellingAndMarketingExpense

us-gaap:SellingAndMarketingExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value7936403434334755947754454337483433313830282737252323312219182014131418131315171514
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.210.511.09.99.29.110.512.619.517.311.910.610.08.79.27.98.07.68.07.77.27.07.97.27.16.97.97.56.66.06.05.85.65.56.05.85.85.84.96.46.1

None

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value39-26.144-31.563-30.13-25.778-36.018-48.444-47.832-66.536-54.394-22.715-11.875-9.731-2.313-0.342-5.047-5.50917-3.089-3.3712.0823.8441.7082.3551.7936.0671.5273.4584.1657.4157.8921.7750.0192.475-2.188-7.941-7.4180.01315-3.176-1.281
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.0-7.4-8.5-8.7-6.9-9.8-10.7-10.9-13.8-12.2-5.0-2.8-2.3-0.5-0.1-1.1-1.34.3-0.6-0.90.51.00.40.70.51.80.41.11.42.42.30.70.00.9-0.7-3.3-3.20.04.3-1.3-0.6

None

us-gaap:InterestExpense

us-gaap:InterestExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value588000.0200000.053000.057000.0105000.0127000.098000.0101000.0395000.0874000.0798000.0713000.0716000.0710000.0658000.0212000.05000.02000.066000.062000.08000.04000.09000.011000.012000.07000.0-8000.033000.037000.051000.0154000.0194000.0253000.0208000.0517000.0662000.0630000.0676000.0732000.0668000.0760000.0
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.00.00.00.00.00.00.10.20.20.20.20.20.10.00.00.00.00.00.00.00.00.00.00.0-0.00.00.00.00.00.10.10.10.20.30.30.30.20.30.3

None

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value556000.032000.046000.045000.087000.086000.087000.0119000.0324000.0789000.0960000.0
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.00.00.00.00.00.10.20.2

None

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-4.1716.6831.547-4.781-2.995-6.272-1.999-1.8480.368-0.009-1.5735.8820.593-3.7244.7821.2513.9924.1561.1020.7641.1630.6050.536-0.350.5240.459-0.5950.165-0.150.3451.3221.2130.7190.432-0.6840.5530.220.189
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.51.90.4-1.4-0.8-1.7-0.4-0.40.1-0.0-0.31.40.1-0.90.90.31.01.00.20.20.30.20.1-0.10.20.1-0.10.1-0.10.10.40.50.30.2-0.20.20.10.1

None

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.4653.2684.6064.4675.1713.9852.7022.2462.9736.4351.0681.0241.0450.940.7861.391.7470.9680.9490.8390.960.7781.0860.9981.0280.9230.8740.8090.8160.7520.9030.980.830.8130.640.7010.8320.8761.2861.2861.27
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.91.21.31.41.10.60.50.61.40.20.20.20.20.10.30.40.20.20.20.20.20.20.30.30.30.20.30.30.20.30.40.30.30.20.30.40.30.40.50.5

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

ostk:Technology


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.4470.9151.4281.671.2270.3410.5830.6210.5210.1730.1660.150.160.1620.210.2380.1670.1550.1650.2060.120.2010.1830.1970.170.1170.0330.0780.1240.2140.218
Percentage of AllocatedShareBasedCompensationExpense18.128.032.032.330.812.626.020.98.116.216.214.417.020.615.113.617.316.319.721.515.418.518.319.218.413.44.19.616.523.722.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.30.40.40.30.10.10.10.10.00.00.00.00.00.00.10.00.00.00.10.00.00.10.10.00.00.00.00.00.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:Technology0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CostOfSales


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.0490.0530.0550.0540.0470.0490.0410.0410.070.0490.0460.0390.0490.0660.0690.080.0510.050.0520.0480.0290.0510.0450.0450.040.0370.0370.0320.0480.0720.074
Percentage of AllocatedShareBasedCompensationExpense2.01.61.21.01.21.81.81.41.14.64.53.75.28.45.04.65.35.36.25.03.74.74.54.44.34.24.63.96.48.07.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CostOfSales0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value1.661.9112.4982.9142.272.0491.3451.9964.9710.7490.7030.7430.6350.5431.0091.3460.7010.6670.5720.6750.570.7530.6930.6890.6320.6760.6950.6520.5550.5590.58
Percentage of AllocatedShareBasedCompensationExpense67.358.555.956.457.075.859.967.177.270.168.771.167.669.172.677.072.470.368.270.373.369.369.467.068.577.385.979.973.861.959.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.50.70.80.60.50.30.41.10.20.20.20.10.10.20.30.20.10.10.20.10.20.20.20.20.20.20.20.20.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingAndMarketingExpense


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.3090.3890.4860.5330.4410.2630.2770.3150.8730.0970.1090.1130.0960.0150.1020.0830.0490.0770.050.0310.0590.0810.0770.0970.0810.0440.0440.0540.0250.0580.108
Percentage of AllocatedShareBasedCompensationExpense12.511.910.910.311.19.712.310.613.69.110.610.810.21.97.34.85.18.16.03.27.67.57.79.48.85.05.46.63.36.411.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.10.10.10.10.10.10.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingAndMarketingExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value34-19.389-29.754-34.519-28.248-42.014-49.88-49.398-65.943-54.733-24.877-6.517-9.718-6.6223.88-3.935-1.45822-2.016-2.6323.2754.4882.2732.032.3426.560.9673.6244.017.7439.092.8240.5122.728-3.349-8.027-7.782-0.42215-3.402-1.349
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.5-5.5-8.0-9.9-7.6-11.4-11.0-11.2-13.6-12.3-5.5-1.5-2.2-1.50.7-0.9-0.35.3-0.4-0.70.81.10.50.60.71.90.21.21.42.52.71.10.21.0-1.1-3.3-3.3-0.24.3-1.4-0.6

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:StatementBusinessSegments

ostk:MVI


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value-5.3015.925-8.484-5.75-9.417-2.992
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-15.2-30.624.620.422.46.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.71.7-2.4-1.5-2.6-0.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:MVI-185.9376.4-1327.7-841.9-1548.8-640.7

ostk:TZero.comInc.


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-10.516-12.568-8.772-13.294-9.995-15.377-12.608-5.547-4.651-18.053
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-30.164.829.538.535.436.625.311.27.133.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.3-3.6-2.4-3.8-2.7-4.2-2.8-1.3-1.0-4.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:TZero.comInc.-82.6-122.7-149.4-234.8-180.1-342.0-254.0-127.9-95.1-372.1

us-gaap:AllOtherSegments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-2.089-3.818-3.482-3.49-9.188-13.42118-9.436-8.561-21.162-7.309-3.666-3.322-8.015-2.966-2.993-2.872-3.024
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-6.019.711.710.132.531.9-37.419.113.038.729.456.334.2121.0-76.476.1197.0-13.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-1.1-0.9-1.0-2.5-3.64.1-2.1-1.8-4.8-1.6-0.9-0.8-1.9-0.6-0.7-0.7-0.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.0-2356.8-51.20.0-1345.2-263.0320.90.0-1528.8-396.70.00.00.00.00.00.00.00.0

us-gaap:Retail


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value52-8.928-12.334-9.251-9.065-13.216-27.682-39.962-57.382
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments151.346.041.526.832.131.555.580.987.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.7-2.5-3.3-2.7-2.4-3.6-6.1-9.1-11.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Retail6.9-2.6-3.4-2.7-2.5-3.6-6.2-9.2-12.0

None

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-4.1456.7551.809-4.389-2.47-5.996-1.436-1.5660.593-0.339-2.1625.3580.013-4.3094.2221.1124.0514.2451.0730.7391.1930.6440.565-0.3250.5490.493-0.560.166-0.1550.3281.1981.0490.4930.253-1.161-0.086-0.364
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.51.90.5-1.3-0.7-1.6-0.3-0.40.1-0.1-0.51.30.0-1.00.80.31.01.00.20.20.30.20.1-0.10.20.1-0.10.1-0.10.10.40.40.20.1-0.4-0.0-0.2

us-gaap:NonoperatingIncomeExpense us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-30
Value1.21.11.00.7390.4910.4150.50.5390.5042.00.9320.4030.3590.3060.06
Percentage of NonoperatingIncomeExpense-29.016.355.3-16.8-19.9-6.9-34.8-34.485.0-590.0-43.17.52761.5-7.15.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.30.30.20.10.10.10.10.10.40.20.10.10.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NonoperatingIncomeExpense us-gaap:StatementBusinessSegments

ostk:MVI


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value-2.768.833-4.057-2.847-5.164-1.147
Percentage of NonoperatingIncomeExpense66.6130.892.4115.386.173.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.42.5-1.2-0.8-1.4-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:MVI-96.8561.2-634.9-416.8-849.3-245.6

ostk:TZero.comInc.


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1.268-1.7823.54-0.4750.34-0.963-0.280.096-0.0360.453
Percentage of NonoperatingIncomeExpense30.6-26.4195.710.8-13.816.119.5-6.1-6.1-133.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.51.0-0.10.1-0.3-0.10.0-0.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ostk:TZero.comInc.-10.0-17.460.3-8.46.1-21.4-5.62.2-0.79.3

us-gaap:AllOtherSegments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.00.003-0.0070.006-2.85-5.168-0.539-1.051-1.0310.116-1.352-0.0170.0-4.4110.001-0.0650.0640.0
Percentage of NonoperatingIncomeExpense-0.00.0-0.4-0.1115.486.237.567.1-173.9-34.262.5-0.30.0102.40.0-5.81.60.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.00.0-0.8-1.4-0.1-0.2-0.20.0-0.3-0.00.0-1.00.0-0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AllOtherSegments0.01.9-0.10.0-417.3-101.3-9.30.0-184.12.20.00.00.00.00.00.00.00.0

us-gaap:Retail


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-0.117-0.2990.2470.1370.040.135-1.13-0.5151.624
Percentage of NonoperatingIncomeExpense2.8-4.413.7-3.1-1.6-2.378.732.9273.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.10.10.00.00.0-0.2-0.10.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Retail-0.0-0.10.10.00.00.0-0.3-0.10.3

None

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.5170.176-0.0940.023-0.6220.878-1.939-0.141-0.027-0.27771-5.412-1.975-0.341.119-0.543-0.2438.964-1.879-0.0151.8491.940.9680.4130.4332.59-72.6140.0910.3120.0460.3030.1310.0420.0090.06-0.240.0160.0220.281-0.044-0.007
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.1-0.00.0-0.20.2-0.4-0.0-0.0-0.115.8-1.3-0.5-0.10.2-0.1-0.12.2-0.4-0.00.50.50.20.10.10.8-18.30.00.10.00.10.10.00.00.0-0.10.00.00.1-0.0-0.0

None

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value61000.04000.0-599000.0130000.0
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.20.0

None

us-gaap:ProfitLoss

us-gaap:ProfitLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-06-302010-06-30
Value34-19.565-29.66-34.542-27.626-42.892-47.941-49.257-65.916-54.456-96.792-1.105-7.743-6.2822.761-3.392-1.21513-0.137-2.6171.4262.5481.3051.6171.9093.97693.5333.6987.697-7.798-1.342
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.4-5.6-8.0-10.0-7.4-11.7-10.6-11.2-13.6-12.2-21.2-0.3-1.8-1.50.5-0.8-0.33.2-0.0-0.70.40.60.30.50.61.217.51.21.32.5-3.3-0.6

None

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value4000.04000.04000.04000.04000.04000.03000.04000.04000.04000.0821000.052000.0-81000.0149000.01514000.0-64000.0-540000.0-1020000.0213000.0-907000.0588000.0-703000.0-621000.0000
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.20.0-0.00.00.3-0.0-0.1-0.20.0-0.20.2-0.2-0.10.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4000.04000.04000.04000.04000.04000.03000.04000.04000.04000.0821000.052000.0-81000.0149000.01514000.0-64000.0-540000.0-1020000.0213000.0-907000.0588000.0-703000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.20.0-0.00.00.3-0.0-0.1-0.20.0-0.20.2-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-1975000.0-3232000.0-2682000.0-3604000.0-2945000.0-3648000.0-5614000.0-1334000.0-1005000.0-3547000.0-1102000.0-319000.0-244000.0-379000.0-334000.0-294000.0-311000.0-335000.0-247000.0-546000.0-242000.0-191000.0-53000.0000
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.9-0.7-1.0-0.8-1.0-1.2-0.3-0.2-0.8-0.2-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.0-0.00.00.00.0

None

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value34-19.561-29.656-34.538-27.622-42.888-47.938-49.253-65.912-54.452-95.971-1.053-7.824-6.1334.275-3.456-1.755120.076-3.5242.0141.8450.6841.6171.9093.97
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.4-5.6-8.0-10.0-7.4-11.7-10.6-11.2-13.6-12.2-21.0-0.2-1.8-1.40.8-0.8-0.42.90.0-0.90.50.50.10.50.61.2

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value36-16.333-26.978-30.938-24.681-39.244-42.327-47.923-64.911-50.909-95.69-0.786-7.499-5.9033.095-3.098-0.904130.11-2.0711.6682.7391.3581.6171.9093.97733.5333.6987.6978.7872.6930.472.719-3.409-7.787-7.798-0.44414-3.358
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.6-4.6-7.3-8.9-6.6-10.7-9.4-10.9-13.4-11.4-21.0-0.2-1.7-1.40.6-0.7-0.23.20.0-0.50.40.70.30.50.61.218.51.21.32.52.61.10.21.0-1.1-3.2-3.3-0.24.3-1.4

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value36-16.333-26.978-30.938-24.681-39.244-42.327-47.923-64.911-50.909-95.69-0.786-7.499-5.9033.095-3.098-0.904130.11-2.0711.6682.7398.7872.6930.472.719-3.409
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.6-4.6-7.3-8.9-6.6-10.7-9.4-10.9-13.4-11.4-21.0-0.2-1.7-1.40.6-0.7-0.23.20.0-0.50.40.72.61.10.21.0-1.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value36-16.329-26.974-30.934-24.677-39.24-42.324-47.919-64.907-50.905-94.869-0.734-7.58-5.7544.609-3.162-1.444120.323-2.9782.2562.0360.7371.6171.9093.97733.5333.6987.6978.7872.6930.472.719-3.409-7.787-7.798-0.444
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.6-4.6-7.3-8.9-6.6-10.7-9.4-10.9-13.4-11.4-20.8-0.2-1.8-1.30.9-0.7-0.33.00.1-0.80.60.50.20.50.61.218.51.21.32.52.61.10.21.0-1.1-3.2-3.3-0.2

None

us-gaap:PreferredStockDividendsIncomeStatementImpact

us-gaap:PreferredStockDividendsIncomeStatementImpact


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value179000.019000.0837000.019000.019000.027000.027000.027000.027000.027000.027000.000
Percentage of PreferredStockDividendsIncomeStatementImpact100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.20.00.00.00.00.00.00.00.00.00.0

None

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value34-16.158-26.651-31.347-24.367-38.269-44.782-46.895-63.443-49.75-93.252-0.791-7.322-5.9033.095-3.098-0.904130.11-2.0711.6682.7391.6171.9093.97733.5333.6987.6978.7872.6930.472.719-3.409-7.787-7.8-0.45414-3.381-1.405
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.4-4.6-7.2-9.0-6.5-10.4-9.9-10.6-13.1-11.2-20.4-0.2-1.7-1.40.6-0.7-0.23.20.0-0.50.40.70.50.61.218.51.21.32.52.61.10.21.0-1.1-3.2-3.3-0.24.3-1.4-0.6

None

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-1.975-3.232-2.682-3.604-2.945-3.648-5.614-1.334-1.005-3.547-1.102-0.319-0.244-0.379-0.334-0.294-0.311-0.335-0.247-0.546-0.242-0.191-0.0530.00.00.00.00.00.00.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.9-0.7-1.0-0.8-1.0-1.2-0.3-0.2-0.8-0.2-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.0-0.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1.975-3.232-2.682-3.604-2.945-3.64817-1.334-1.005-3.547-1.102-0.319-0.244-0.379-2.2140.2940.3110.335-2.2051.412-0.242-0.191
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0-309.7100.0100.0100.0100.0100.0100.0100.0662.9-100.0-100.0-100.0892.7-258.6100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.9-0.7-1.0-0.8-1.03.8-0.3-0.2-0.8-0.2-0.1-0.1-0.1-0.40.10.10.1-0.50.4-0.1-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:Assets

us-gaap:Assets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value645456417399449452461501452526433395412441485424414392429331320320376298276280319179171165181153137141179157162217
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:Liabilities

us-gaap:Liabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value441295239230250243250243254270261235252274312264253229279183187190247170147154196131127127151132120125166141139186
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets68.564.657.457.755.753.754.348.556.351.360.359.661.362.264.362.461.058.765.255.358.659.565.757.053.455.261.673.174.677.083.086.287.288.592.689.985.885.7

None

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value645456417399449452461501452526433395412441485424414392429331320320376298276280319179171165181153137141179157162217
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-312008-12-31
Value1391001151031271341311701201791751631621691751611631631501491331291291281281251224843383021171613163010-2.246
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.622.027.625.928.329.828.634.126.634.240.541.339.538.536.138.139.441.735.145.041.540.534.343.046.644.838.426.925.423.017.013.812.811.57.410.114.10.00.0

None

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value400210177133178184215255223317265150161190260195194196248151184195258184171176219139140133155125110113149125130185
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets62.046.242.533.439.840.846.750.949.360.361.138.239.243.253.746.146.950.257.945.757.560.968.561.761.962.968.677.582.080.985.781.479.980.383.179.780.185.3

None

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302008-12-31
Value318141112831211191411821522592039210313618312412212817081105124181112101110148848481937259729679821001247676106139746596
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets49.430.926.920.927.026.430.736.333.649.346.823.325.230.937.729.329.532.739.724.532.938.848.237.836.839.446.547.349.549.651.447.243.650.954.050.150.80.056.90.00.00.00.00.00.00.0

None

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value47372422233035302821302420212821191916161515181415151614141519141011138.4456.64213
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.48.25.95.65.36.87.86.16.34.16.96.25.04.95.85.04.74.93.85.14.94.95.05.05.75.65.08.28.59.610.69.17.38.47.55.34.16.2

None

us-gaap:InventoryNet

us-gaap:InventoryNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value6.344.6785.847.24411131417151213131517181517192023272426252022272220212621211622192132
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.01.41.82.63.03.13.53.42.43.23.43.74.03.93.74.25.04.77.08.67.67.08.57.38.18.512.712.313.014.513.915.311.712.812.212.914.7

None

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2220181819182223252216182011111717101316171012141610101316101213159.1412151511
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.54.64.44.64.34.14.94.85.64.23.74.74.92.72.44.14.22.83.35.15.53.43.34.75.83.63.27.39.86.47.18.811.06.47.09.79.85.3

None

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


None
Period End2020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value359351339315314250191191171160
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets55.784.273.672.864.958.450.859.994.489.6

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

ostk:ComputerHardwareandSoftware


None
Period End2020-06-302019-12-31
Value230223
Percentage of PropertyPlantAndEquipmentGross64.363.5
Percentage of Assets35.853.5
Percentage of Assets ostk:ComputerHardwareandSoftware0.00.0

ostk:FurnitureAndEquipment


None
Period End2020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value17171714151110141413
Percentage of PropertyPlantAndEquipmentGross4.85.05.04.65.14.55.57.58.38.7
Percentage of Assets2.74.23.73.33.32.72.84.57.87.8
Percentage of Assets ostk:FurnitureAndEquipment0.00.00.00.00.00.00.00.00.00.0

us-gaap:Building


None
Period End2020-06-302019-12-312018-12-312017-12-312016-12-312015-12-31
Value696969696744
Percentage of PropertyPlantAndEquipmentGross19.319.720.421.921.617.9
Percentage of Assets10.716.615.015.914.010.4
Percentage of Assets us-gaap:Building0.00.00.00.00.00.0

us-gaap:Land


None
Period End2020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value121212121210100.0
Percentage of PropertyPlantAndEquipmentGross3.63.63.84.04.14.35.70.0
Percentage of Assets2.03.12.82.92.62.52.90.0
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.0

us-gaap:LandImprovements


None
Period End2020-06-302019-12-312018-12-312017-12-312016-12-312015-12-31
Value7.0047.0036.9726.7646.3560.0
Percentage of PropertyPlantAndEquipmentGross2.02.02.12.12.00.0
Percentage of Assets1.11.71.51.61.30.0
Percentage of Assets us-gaap:LandImprovements0.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


None
Period End2020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value11118.3797.7527.0627.7537.636.5396.3395.445
Percentage of PropertyPlantAndEquipmentGross3.33.42.52.52.23.14.03.43.73.4
Percentage of Assets1.92.91.81.81.51.82.02.03.53.0
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.0

us-gaap:MachineryAndEquipment


None
Period End2020-06-302019-12-312018-12-312017-12-312016-12-312015-12-31
Value9.7829.7969.7138.3567.9150.0
Percentage of PropertyPlantAndEquipmentGross2.72.82.92.62.50.0
Percentage of Assets1.52.32.11.91.60.0
Percentage of Assets us-gaap:MachineryAndEquipment0.00.00.00.00.00.0

None

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value232226221219215209204202198192186201194187180174169162156139164150135
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.049.653.155.047.946.144.440.343.836.543.051.047.242.537.241.140.841.536.537.051.482.875.5

None

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value923000.01123000.01042000.01123000.01481000.01690000.01546000.01133000.0918000.01160000.0948000.0946000.0945000.0807000.01000000.01100000.01098000.01165000.0354000.032000.030000.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AmortizationOfIntangibleAssets us-gaap:IncomeStatementLocation

ostk:Technology


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value846000.0847000.01039000.0896000.0938000.0853000.0890000.0885000.0895000.0755000.0905000.0905000.0905000.0905000.0753000.0699000.0726000.0726000.0
Percentage of AmortizationOfIntangibleAssets0.091.892.586.083.557.652.757.279.082.278.095.595.795.893.369.966.066.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets ostk:Technology0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value62000.065000.068000.0133000.0170000.0-830000.0782000.0542000.034000.044000.0234000.021000.021000.020000.0-37000.027000.044000.022000.0
Percentage of AmortizationOfIntangibleAssets0.07.06.112.815.1-56.046.335.13.04.820.22.22.22.1-4.62.74.02.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingAndMarketingExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value10000.011000.016000.016000.016000.016000.018000.0119000.0204000.0119000.021000.022000.020000.020000.059000.0246000.0354000.0350000.0
Percentage of AmortizationOfIntangibleAssets0.01.21.41.51.41.11.17.718.013.01.82.32.12.17.324.632.231.9
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:SellingAndMarketingExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1261261301321311311341331311261291311341371341361261069378655452473533272625252123232325272727
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.727.731.133.229.329.129.226.629.124.129.833.432.631.127.732.230.527.321.823.820.617.113.816.012.711.98.515.014.915.711.615.016.916.514.117.117.012.8

None

us-gaap:LongTermInvestments

us-gaap:LongTermInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value5053424143486057431311
Percentage of LongTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.811.810.110.49.710.713.111.59.63.02.4

None

us-gaap:Goodwill

us-gaap:Goodwill


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value27272727272522222222141414141414141415152.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.7842.784
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.25.96.56.86.05.65.04.44.94.23.43.73.63.33.03.53.53.73.64.60.90.90.70.91.01.00.91.61.61.71.51.82.02.01.61.81.71.3

None

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value9.9191011121517132526247.3378.2889.171101011121314150.0
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.52.42.83.23.43.82.95.05.84.71.72.12.22.32.22.83.13.53.44.70.0

None

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2323254345370.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.00.0
Percentage of Assets3.65.26.110.810.08.20.0

None

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value7.1733.7074.0338.4467.4927.875148.1135.8883517141412141215109.3149.589.8127.8092.7121.9431.7771.8292.0232.1672.4762.8672.1662.6431.6481.7922.262.2611.9641.405
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.10.81.02.11.71.73.11.61.36.84.03.83.52.83.03.03.72.82.22.93.12.40.70.70.60.70.61.21.41.71.21.71.21.31.31.41.20.6

None

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value500000.0414000.0823000.0818000.01518000.02636000.0
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.20.20.30.6

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value500000.0414000.0823000.0818000.01518000.02636000.0
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.20.20.30.6
Percentage of Assets us-gaap:FairValueInputsLevel10.00.00.00.00.00.0

None

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value374228215186203202241234245223214175192212249207202194258176181183242166143150193129126125148129117122163107122171
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets58.050.151.746.745.444.652.446.754.242.549.544.446.548.251.449.048.949.660.353.156.657.364.455.752.053.860.572.473.875.781.684.485.586.691.068.075.278.6

None

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value131747560707410293928985707586106847879122646866112635662905449466243404270423867
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.316.318.115.115.816.522.218.620.517.019.717.818.319.521.920.019.020.228.619.621.320.929.921.220.522.228.330.528.928.334.328.229.530.239.226.923.930.9

None

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value14109.7147.3578.3915.784.274.954147.1936.2836.3074.986.1761113139.9344.0343.416
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.42.31.81.91.30.91.03.11.41.41.61.21.42.33.23.63.12.21.9

None

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1448888798281871001099282587281967776698364677281625051654547464740353647373240
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.319.421.119.918.417.919.020.124.217.519.014.917.518.419.818.418.417.819.419.520.922.821.620.918.418.520.525.327.528.426.226.426.025.526.723.919.818.7

None

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value4785000.05968000.06603000.05725000.05731000.00
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.00.0
Percentage of Assets0.71.31.61.41.30.0

None

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value4332000.05826000.03962000.0489000.0486000.0482000.0476000.0472000.0468000.0182000.0178000.01507000.01548000.01604000.01627000.0581000.0
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.71.30.90.10.10.10.10.10.10.00.00.40.40.40.30.1

None

us-gaap:LongTermDebt

us-gaap:LongTermDebt


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value42430.00.00.03.0983.0693.0693.0690.0434343443931199.4880.0
Percentage of LongTermDebt100.0100.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets6.79.60.00.00.00.70.70.60.70.011.010.610.09.19.37.75.02.20.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

ostk:LoanCoreCapitalFundingCorporation, ostk:MezzanineNote


None
Period End2020-03-06
Value13
Percentage of LongTermDebt0.0
Percentage of Assets0.0
Percentage of Assets ostk:LoanCoreCapitalFundingCorporation ostk:MezzanineNote0.0

ostk:LoanCoreCapitalFundingCorporation, us-gaap:SeniorNotes


None
Period End2020-03-06
Value34
Percentage of LongTermDebt0.0
Percentage of Assets0.0
Percentage of Assets ostk:LoanCoreCapitalFundingCorporation us-gaap:SeniorNotes0.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

ostk:LoanCoreCapitalFundingCorporation, us-gaap:SeniorNotes, us-gaap:SubsequentEvent


None
Period End2020-03-06
Value34
Percentage of LongTermDebt0.0
Percentage of Assets0.0
Percentage of Assets ostk:LoanCoreCapitalFundingCorporation us-gaap:SeniorNotes us-gaap:SubsequentEvent0.0

ostk:LoanCoreCapitalFundingCorporation, us-gaap:SubordinatedDebt, us-gaap:SubsequentEvent


None
Period End2020-03-06
Value13
Percentage of LongTermDebt0.0
Percentage of Assets0.0
Percentage of Assets ostk:LoanCoreCapitalFundingCorporation us-gaap:SubordinatedDebt us-gaap:SubsequentEvent0.0

None

us-gaap:MinorityInterest

us-gaap:MinorityInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value63616265717478877776-3.505-3.308-2.989-2.745-2.366-2.032-1.738-1.427-1.092-0.845-0.261-0.114-0.0180.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets9.913.415.016.416.016.517.117.417.214.5-0.8-0.8-0.7-0.6-0.5-0.5-0.4-0.4-0.3-0.3-0.1-0.0-0.00.0

None

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4022000.02284000.02319000.01616000.02147000.02093000.05958000.05934000.06160000.06539000.07120000.07159000.07099000.06840000.06890000.09164000.09515000.08924000.06974000.07380000.06207000.06888000.04843000.03888000.03950000.03997000.03294000.01147000.01383000.02049000.02522000.02765000.02431000.02630000.02998000.03034000.03223000.03175000.0
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.50.60.40.50.51.31.21.41.21.61.81.71.51.42.22.32.31.62.21.92.11.31.31.41.41.00.60.81.21.41.81.81.91.71.92.01.5

None

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value20202142440.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.00.0
Percentage of Assets3.24.55.210.69.80.0

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-312008-12-31
Value1391001151031271341311701201791751631621691751611631631501491331291291281281251224843383021171613163010-2.246
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.622.027.625.928.329.828.634.126.634.240.541.339.538.536.138.139.441.735.145.041.540.534.343.046.644.838.426.925.423.017.013.812.811.57.410.114.10.00.0

None

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-06-302010-12-31
Value203161177168199209210258198256172159159166172159161162149148132129129118302230
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.535.442.642.344.346.345.751.543.748.739.740.438.737.835.737.639.041.334.844.741.440.534.337.117.014.114.1

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value-0.56-0.564-0.568-0.572-0.576-0.58-0.584-0.587-0.591-0.595-0.599-1.42-1.472-1.391-1.54-3.054-2.99-2.45-1.43-1.643-0.736-1.324-0.6210.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.2-0.3-0.2-0.3-0.9-0.9-0.8-0.9-1.9-1.8-1.5-1.0-1.1-0.6-1.0-0.50.00.00.0
Percentage of Assets-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.4-0.4-0.3-0.3-0.7-0.7-0.6-0.3-0.5-0.2-0.4-0.20.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312011-06-302010-12-31
Value770768764726719701657651553547494387385384383374372371370369368367366361356353351349
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest379.1475.1430.0429.8361.2334.9312.3252.5279.2213.7287.4242.2241.3230.5221.6234.4230.4228.9247.8248.8277.1283.0283.4304.61152.70.01531.11140.8
Percentage of Assets119.5168.2183.1181.6160.1155.0142.7129.9122.1104.0114.097.993.587.279.088.289.994.686.2111.2114.8114.697.2113.1196.1196.8216.2160.5
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value63616265717478877776-3.505-3.308-2.989-2.745-2.366-2.032-1.738-1.427-1.092-0.845-0.261-0.114-0.0180.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest31.438.035.338.836.135.737.533.839.229.8-2.0-2.1-1.9-1.6-1.4-1.3-1.1-0.9-0.7-0.6-0.2-0.1-0.00.00.00.0
Percentage of Assets9.913.415.016.416.016.517.117.417.214.5-0.8-0.8-0.7-0.6-0.5-0.5-0.4-0.4-0.3-0.3-0.1-0.0-0.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value13910011510312713413117012017917516316216917516116316315014913312912911830
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest68.662.064.761.263.964.362.566.260.870.2102.0102.1101.9101.6101.4101.3101.1100.9100.7100.6100.2100.1100.0100.0100.0
Percentage of Assets21.622.027.625.928.329.828.634.126.634.240.541.339.538.536.138.139.441.735.145.041.540.534.337.117.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312011-06-302010-12-31
Value-560.48-596.723-580.39-553.335-522.397-497.716-458.897-413.395-365.472-300.561-254.692-158.893-157.926-150.427-153.898-156.993-153.895-152.991-166.42-166.53-149.457-151.125-153.864-162.718-247.096-261.765-250.569-242.327
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-275.6-369.1-326.3-327.5-262.4-237.5-217.8-160.2-184.5-117.4-148.0-99.4-98.7-90.1-89.0-98.4-95.1-94.4-111.4-112.3-112.4-116.4-119.1-137.0-798.10.0-1090.1-790.4
Percentage of Assets-86.9-130.6-138.9-138.4-116.3-109.9-99.5-82.4-80.7-57.1-58.7-40.2-38.3-34.1-31.7-37.0-37.1-39.0-38.8-50.2-46.6-47.2-40.8-50.9-135.8-145.8-153.9-111.2
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312011-06-302010-12-31
Value-70.537-70.493-68.807-68.773-68.746-68.753-66.757-66.709-66.662-66.17-63.816-63.691-63.672-63.409-52.587-52.484-52.349-52.055-51.747-51.747-84.893-84.885-82.531-80.23-78.839-78.368-78.364-76.764
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-34.7-43.6-38.7-40.7-34.5-32.8-31.7-25.9-33.6-25.8-37.1-39.8-39.8-38.0-30.4-32.9-32.4-32.1-34.6-34.9-63.9-65.4-63.9-67.6-254.60.0-340.9-250.4
Percentage of Assets-10.9-15.4-16.5-17.2-15.3-15.2-14.5-13.3-14.7-12.6-14.7-16.1-15.4-14.4-10.8-12.4-12.6-13.3-12.1-15.6-26.5-26.5-21.9-25.1-43.3-43.6-48.1-35.2
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4000.04000.04000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.02000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockValue us-gaap:StatementEquityComponents

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value4000.04000.04000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.03000.02000.02000.02000.02000.02000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value770768764726719701657651553547494387385384383374372371370369368367366364363362361360359357356355355354353352351349
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets119.5168.2183.1181.6160.1155.0142.7129.9122.1104.0114.097.993.587.279.088.289.994.686.2111.2114.8114.697.2122.3131.6129.3113.1201.0209.8216.5196.1231.7257.8249.9196.8223.3216.2160.5

None

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value-560480000.0-596720000.0-580390000.0-553340000.0-522400000.0-497720000.0-458900000.0-413400000.0-365470000.0-300560000.0-254690000.0-158890000.0-157930000.0-150430000.0-153900000.0-156990000.0-153900000.0-152990000.0-166420000.0-166530000.0-149460000.0-151120000.0-153860000.0-154150000.0-152710000.0-154620000.0-158590000.0-232170000.0-235700000.0-239400000.0-247100000.0-255880000.0-258580000.0-259050000.0-261760000.0-258360000.0-250570000.0-242330000.0
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-86.9-130.6-138.9-138.4-116.3-109.9-99.5-82.4-80.7-57.1-58.7-40.2-38.3-34.1-31.7-37.0-37.1-39.0-38.8-50.2-46.6-47.2-40.8-51.7-55.2-55.1-49.6-129.4-137.6-144.9-135.8-166.5-187.7-182.8-145.8-163.5-153.9-111.2

None

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value-560000.0-564000.0-568000.0-572000.0-576000.0-580000.0-584000.0-587000.0-591000.0-595000.0-599000.0-1420000.0-1472000.0-1391000.0-1540000.0-3054000.0-2990000.0-2450000.0-1430000.0-1643000.0-736000.0-1324000.0-621000.00
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.4-0.4-0.3-0.3-0.7-0.7-0.6-0.3-0.5-0.2-0.4-0.20.0

None

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value7070686868686666666663636363525252525151848482828282808080807878787878787876
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.915.416.517.215.315.214.513.314.712.614.716.115.414.410.812.412.613.312.115.626.526.521.927.729.829.425.144.746.848.643.351.357.255.643.649.648.135.2

None

us-gaap:MinorityInterest

us-gaap:MinorityInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value63616265717478877776-3.505-3.308-2.989-2.745-2.366-2.032-1.738-1.427-1.092-0.845-0.261-0.114-0.0180.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets9.913.415.016.416.016.517.117.417.214.5-0.8-0.8-0.7-0.6-0.5-0.5-0.4-0.4-0.3-0.3-0.1-0.0-0.00.0

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value182-12.2277.583-23.343-14.423-51.429-18.634-49.721-60.397-10.18227-16.398-23.16-23.09755
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.3-3.52.0-6.7-3.9-14.0-4.1-11.3-12.5-2.36.0-3.9-5.4-5.310.5

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-1979000.0-5999000.0-12593000.0-11144000.0-4889000.01774000.0-21415000.0-24858000.0-22700000.0-41950000.0-3592000.05635000.0-7514000.0-12489000.0-14281000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-1.7-3.4-3.2-1.30.5-4.7-5.6-4.7-9.4-0.81.3-1.7-2.9-2.7

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-3.4024734-3.3232028-0.574105-24.22310887-1.036-1.601-11.17217
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.413.49.2-1.05.67.9-0.123.9-5.024.419.1-0.2-0.4-2.63.4

None

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value17729-37.811.492-20.699
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.78.3-10.90.4-5.6

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value182-12.2277.583-23.343-14.423-51.429-18.634-49.721-60.397-10.18227-16.398-23.16-23.09755
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.3-3.52.0-6.7-3.9-14.0-4.1-11.3-12.5-2.36.0-3.9-5.4-5.310.5

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value36-16.333-26.978-30.938-24.681-39.244-42.327-47.923-64.911-50.909-95.69-0.786-7.499-5.9033.095-3.098-0.904130.11-2.0711.6682.7391.3581.6171.9093.97733.5333.6987.6978.7872.6930.472.719-3.409-7.787-7.798-0.44414-3.358
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.6-4.6-7.3-8.9-6.6-10.7-9.4-10.9-13.4-11.4-21.0-0.2-1.7-1.40.6-0.7-0.23.20.0-0.50.40.70.30.50.61.218.51.21.32.52.61.10.21.0-1.1-3.2-3.3-0.24.3-1.4

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value36-16.333-26.978-30.938-24.681-39.244-42.327-47.923-64.911-50.909-95.69-0.786-7.499-5.9033.095-3.098-0.904130.11-2.0711.6682.7398.7872.6930.472.719-3.409
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.6-4.6-7.3-8.9-6.6-10.7-9.4-10.9-13.4-11.4-21.0-0.2-1.7-1.40.6-0.7-0.23.20.0-0.50.40.72.61.10.21.0-1.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:ProfitLoss

us-gaap:ProfitLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-06-302010-06-30
Value34-19.565-29.66-34.542-27.626-42.892-47.941-49.257-65.916-54.456-96.792-1.105-7.743-6.2822.761-3.392-1.21513-0.137-2.6171.4262.5481.3051.6171.9093.97693.5333.6987.697-7.798-1.342
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.4-5.6-8.0-10.0-7.4-11.7-10.6-11.2-13.6-12.2-21.2-0.3-1.8-1.50.5-0.8-0.33.2-0.0-0.70.40.60.30.50.61.217.51.21.32.5-3.3-0.6

None

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1311-0.527-0.5631.773-14.0685.4851.9556.4-8.2825.7523.577-0.864-6.5277.0971.740.2180.951-0.8010.4580.192-3.3124.022-0.687-0.208-0.2111.3750.09-1.269-3.4225.2533.936-1.857-1.565.0561.803-1.239-5.6795.1720.103
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1.662-1.162-1.404-4.633-1.677-0.554-2.4611.9531.112-1.2320.141-1.59-2.574-1.2113.22-1.801-1.921-0.603-3.164-4.3223.061-1.7410.9255.081-2.571-4.274.311.744-0.546-4.9295.0740.3164.429-6.3483.783-1.860.907-11.951-2.2798.667
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2.4653.2684.6064.4675.1713.9852.7022.2462.9736.4351.0681.0241.0450.940.7861.391.7470.9680.9490.8390.960.7781.0860.9981.0280.9230.8740.8090.8160.7520.9030.9810.830.8130.640.7030.8320.8761.2861.285
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-1979000.0-5999000.0-12593000.0-11144000.0-4889000.01774000.0-21415000.0-24858000.0-22700000.0-41950000.0-3592000.05635000.0-7514000.0-12489000.0-14281000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-1.7-3.4-3.2-1.30.5-4.7-5.6-4.7-9.4-0.81.3-1.7-2.9-2.7

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-3.4024734-3.3232028-0.574105-24.22310887-1.036-1.601-11.17217
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.413.49.2-1.05.67.9-0.123.9-5.024.419.1-0.2-0.4-2.63.4

None

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


None
Period End2020-06-302020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.0470.00.00.00.00.00.0400.00.00.04.8267.79512119.4880.00.00.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0100.00.00.00.00.00.00.0100.00.00.00.0100.0100.0100.0100.0100.00.00.00.0

None

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateStatedPercentage

ostk:LoanCoreCapitalFundingCorporation, ostk:MezzanineNote


None
Period End2020-03-06
Value0.05002
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations ostk:LoanCoreCapitalFundingCorporation ostk:MezzanineNote0.0

ostk:LoanCoreCapitalFundingCorporation, ostk:SeniorandMezzanineBlendedRate


None
Period End2020-03-06
Value0.0445
Percentage of DebtInstrumentInterestRateStatedPercentage89.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations ostk:LoanCoreCapitalFundingCorporation ostk:SeniorandMezzanineBlendedRate0.0

ostk:LoanCoreCapitalFundingCorporation, us-gaap:SeniorNotes


None
Period End2020-03-06
Value0.04242
Percentage of DebtInstrumentInterestRateStatedPercentage84.8
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations ostk:LoanCoreCapitalFundingCorporation us-gaap:SeniorNotes0.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

ostk:LoanCoreCapitalFundingCorporation, us-gaap:LongTermDebt, us-gaap:SubsequentEvent


None
Period End2020-03-06
Value0.0445
Percentage of DebtInstrumentInterestRateStatedPercentage89.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations ostk:LoanCoreCapitalFundingCorporation us-gaap:LongTermDebt us-gaap:SubsequentEvent0.0

None

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod dei:LegalEntity, us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

ostk:TZero.comInc., us-gaap:RestrictedStock


None
Period End2020-03-31
Value0.01
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:RestrictedStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-30
Value0.0350.4360.0010.0010.020.960.0240.3220.0110.0110.0340.2540.0250.010.050.4560.0030.0010.2340.0010.0090.00.0014250.00.00250.03250.00.00150.105
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.04360.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value3211431148512312214218315226020392104136183124123128170
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ProceedsFromSaleOfLongtermInvestments

us-gaap:ProceedsFromSaleOfLongtermInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4127000.02179000.0257000.001547000.05535000.00000
Percentage of ProceedsFromSaleOfLongtermInvestments100.0100.0100.00.0100.0100.00.00.00.00.0

ostk:AdjustmentstoAdditionalPaidinCapitalNoncontrollingInterests us-gaap:StatementEquityComponents

ostk:AdjustmentstoAdditionalPaidinCapitalNoncontrollingInterests

us-gaap:NoncontrollingInterest


None
Period End2020-06-302019-06-30
Value5000000.00
Percentage of AdjustmentstoAdditionalPaidinCapitalNoncontrollingInterests100.00.0

ostk:AdvertisingRevenueasaPercentageofTotalRevenue

ostk:AdvertisingRevenueasaPercentageofTotalRevenue


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.0300.0200.0200.020.020.0200.020.020.02
Percentage of AdvertisingRevenueasaPercentageofTotalRevenue100.00.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.0

ostk:AmortizationOfIntangibleAssetsIncludingImpactOfPurchasePriceAllocationAdjustments

ostk:AmortizationOfIntangibleAssetsIncludingImpactOfPurchasePriceAllocationAdjustments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value918000.0923000.01123000.01045000.01124000.039000.01546000.01133000.0918000.0
Percentage of AmortizationOfIntangibleAssetsIncludingImpactOfPurchasePriceAllocationAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:CostOfGoodsAndServicesSoldFulfillmentAndRelatedCosts

ostk:CostOfGoodsAndServicesSoldFulfillmentAndRelatedCosts


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value151615161719191917191818182218181821171717191514151613121314121213141212
Percentage of CostOfGoodsAndServicesSoldFulfillmentAndRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:CostOfGoodsAndServicesSoldFulfillmentAndRelatedCostsPercentage

ostk:CostOfGoodsAndServicesSoldFulfillmentAndRelatedCostsPercentage


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.0400.050.040.0500.040.040.0400.040.040.0400.040.040.0400.040.040.0400.040.040.0500.040.040.0400.050.050.0500.050.05
Percentage of CostOfGoodsAndServicesSoldFulfillmentAndRelatedCostsPercentage100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0

ostk:CostOfGoodsAndServicesSoldPercentage

ostk:CostOfGoodsAndServicesSoldPercentage


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.7800.80.80.80.010.80.810.7900.80.810.800.820.820.810.010.810.810.8100.810.810.8100.80.80.8100.820.820.8200.840.83
Percentage of CostOfGoodsAndServicesSoldPercentage100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0

ostk:CostOfGoodsAndServicesSoldProductAndOther

ostk:CostOfGoodsAndServicesSoldProductAndOther


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value259277261283277351334371333350321329326406343324318376301297305365270254261308228222239266196184201248189182
Percentage of CostOfGoodsAndServicesSoldProductAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:CostOfGoodsAndServicesSoldProductAndOtherPercentage

ostk:CostOfGoodsAndServicesSoldProductAndOtherPercentage


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.74-0.010.750.760.7500.760.770.7500.760.760.7600.780.770.7700.770.770.7700.770.770.770.010.760.760.7700.770.770.7700.790.78
Percentage of CostOfGoodsAndServicesSoldProductAndOtherPercentage100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0

ostk:DeductionsFromSalesReturnsCurrent

ostk:DeductionsFromSalesReturnsCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value-111.603262627
Percentage of DeductionsFromSalesReturnsCurrent100.0100.0100.0100.0

ostk:EquitySecuritiesGainLoss

ostk:EquitySecuritiesGainLoss


None
Period End2020-06-302019-06-30
Value-836000.0220000.0
Percentage of EquitySecuritiesGainLoss100.0100.0

ostk:EquitySecuritiesUnrealizedGainLoss

ostk:EquitySecuritiesUnrealizedGainLoss


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-1529000.04306000.0-700000.0-500000.0-618000.0-680000.0-72000.01836000.0
Percentage of EquitySecuritiesUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0

ostk:EquitySecuritieswithoutReadilyDeterminableFairValueImpairmentLossAndDownwardAdjustments

ostk:EquitySecuritieswithoutReadilyDeterminableFairValueImpairmentLossAndDownwardAdjustments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value00-11416000.02750000.00-2958000.0-1047000.0511000.0
Percentage of EquitySecuritieswithoutReadilyDeterminableFairValueImpairmentLossAndDownwardAdjustments0.00.0100.0100.00.0100.0100.0100.0

ostk:GainLossOnRepurchaseOfCrypocurrencies

ostk:GainLossOnRepurchaseOfCrypocurrencies


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value00000425000.00000
Percentage of GainLossOnRepurchaseOfCrypocurrencies0.00.00.00.00.0100.00.00.00.00.0

ostk:GiftCardAndClubORewardsBreakage us-gaap:StatementBusinessSegments

ostk:GiftCardAndClubORewardsBreakage

us-gaap:Retail


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1.30.9050.9231.1
Percentage of GiftCardAndClubORewardsBreakage100.0100.0100.0100.0

ostk:GrossProfitPercentage

ostk:GrossProfitPercentage


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.2200.20.20.2-0.010.20.190.2100.20.190.200.180.180.19-0.010.190.190.1900.190.190.1900.20.20.1900.180.180.1800.160.17
Percentage of GrossProfitPercentage100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0

ostk:ImpairmentOfCryptocurrencies

ostk:ImpairmentOfCryptocurrencies


None
Period End2020-03-312019-03-31
Value0.0210.318
Percentage of ImpairmentOfCryptocurrencies100.0100.0

ostk:ImpairmentOnNotesReceivable

ostk:ImpairmentOnNotesReceivable


None
Period End2020-03-312019-03-31
Value-15000.0-1237000.0
Percentage of ImpairmentOnNotesReceivable100.0100.0

ostk:IncreaseDecreaseInOperatingLeaseLiability

ostk:IncreaseDecreaseInOperatingLeaseLiability


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1861000.0-1751000.0-3927000.0-1746000.0-1091000.0-1249000.000
Percentage of IncreaseDecreaseInOperatingLeaseLiability100.0100.0100.0100.0100.0100.00.00.0

ostk:NetCapitalRatioForBrokerDealer dei:LegalEntity

ostk:NetCapitalRatioForBrokerDealer

ostk:SpeedRouteLLC


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-0.333.880.08-0.691.671.5-0.98-7.856.493.541.33-0.740.713.22.6-0.4-1.23.4
Percentage of NetCapitalRatioForBrokerDealer100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:TZEROATSLLC


None
Period End2020-06-302020-03-31
Value-0.140.28
Percentage of NetCapitalRatioForBrokerDealer42.47.2

ostk:NetIncomeLossAvailableToCommonStockholdersBeforeUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

ostk:NetIncomeLossAvailableToCommonStockholdersBeforeUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value36-16.352-26.997-31.775-24.7-38.838-45.422-47.95-64.938-50.936-95.826-0.813-7.526-5.93-3.098-0.904
Percentage of NetIncomeLossAvailableToCommonStockholdersBeforeUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:NoncashOrPartNoncashAcquisitionCommonStockRepurchased

ostk:NoncashOrPartNoncashAcquisitionCommonStockRepurchased


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0000643000.00000
Percentage of NoncashOrPartNoncashAcquisitionCommonStockRepurchased0.00.00.00.0100.00.00.00.00.0

ostk:NoncashOrPartNoncashAcquisitionEquityMethodInvestmentAppliedToPurchasePrice

ostk:NoncashOrPartNoncashAcquisitionEquityMethodInvestmentAppliedToPurchasePrice


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value000093000.03707000.00000
Percentage of NoncashOrPartNoncashAcquisitionEquityMethodInvestmentAppliedToPurchasePrice0.00.00.00.0100.0100.00.00.00.00.0

ostk:NoncashOrPartNoncashAcquisitionProceedsFromSaleOfCommonStockIncludedInAccountsReceivable

ostk:NoncashOrPartNoncashAcquisitionProceedsFromSaleOfCommonStockIncludedInAccountsReceivable


None
Period End2020-03-312019-03-312018-03-31
Value08957000.00
Percentage of NoncashOrPartNoncashAcquisitionProceedsFromSaleOfCommonStockIncludedInAccountsReceivable0.0100.00.0

ostk:NoncashOrPartNoncashAcquisitionProceedsFromSaleofMarketableSecuritiesIncludedinAccountsReceivable

ostk:NoncashOrPartNoncashAcquisitionProceedsFromSaleofMarketableSecuritiesIncludedinAccountsReceivable


None
Period End2020-03-312019-03-31
Value3081000.00
Percentage of NoncashOrPartNoncashAcquisitionProceedsFromSaleofMarketableSecuritiesIncludedinAccountsReceivable100.00.0

ostk:NoncashandorNonoperatingGainLossonSaleofCryptocurrencies

ostk:NoncashandorNonoperatingGainLossonSaleofCryptocurrencies


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value219000.0258000.0183000.0137000.0-9000.0-42000.064000.06819000.01529000.01150000.0
Percentage of NoncashandorNonoperatingGainLossonSaleofCryptocurrencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:NoncashorPartNoncashAcquisitionDepositsAppliedToPurchasePrice

ostk:NoncashorPartNoncashAcquisitionDepositsAppliedToPurchasePrice


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value000007347000.00000
Percentage of NoncashorPartNoncashAcquisitionDepositsAppliedToPurchasePrice0.00.00.00.00.0100.00.00.00.00.0

ostk:OperatingLeaseRightOfUseAssetAmortization

ostk:OperatingLeaseRightOfUseAssetAmortization


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1399000.01630000.01736000.01948000.01325000.01667000.000
Percentage of OperatingLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.00.00.0

ostk:OtherEquityInvestmentAdjustments

ostk:OtherEquityInvestmentAdjustments


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-90000.0128000.00720000.0-977000.0-2843000.0000
Percentage of OtherEquityInvestmentAdjustments100.0100.00.0100.0100.0100.00.00.00.0

ostk:OtherIncomeExpense

ostk:OtherIncomeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value210000.044000.091000.0533000.079000.0544000.0-407000.0-142000.0-437000.0-112000.0
Percentage of OtherIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:PartnersCapitalAccountExchangeofShares us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

ostk:PartnersCapitalAccountExchangeofShares

us-gaap:SeriesAPreferredStock, us-gaap:PreferredStock


None
Period End2020-06-302019-06-30
Value0123000.0
Percentage of PartnersCapitalAccountExchangeofShares0.0100.0

ostk:PreferredStockSharesDividendsDeclared us-gaap:StatementClassOfStock

ostk:PreferredStockSharesDividendsDeclared

ostk:SeriesA1PreferredStock


None
Period End2020-03-312019-12-31
Value4085000.0508000.0
Percentage of PreferredStockSharesDividendsDeclared100.0100.0

ostk:RecognitionOfFinanceLeaseRightOfUseAsset

ostk:RecognitionOfFinanceLeaseRightOfUseAsset


None
Period End2020-03-312019-03-31
Value517000.00
Percentage of RecognitionOfFinanceLeaseRightOfUseAsset100.00.0

ostk:RecognitionOfOperatingLeaseRightOfUseAsset

ostk:RecognitionOfOperatingLeaseRightOfUseAsset


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.00.00.00.0300.00.00.00.0
Percentage of RecognitionOfOperatingLeaseRightOfUseAsset0.00.00.00.00.0100.00.00.00.00.0

ostk:RevenuefromContractwithCustomerExcludingVitalChainandEvernym us-gaap:StatementBusinessSegments

ostk:RevenuefromContractwithCustomerExcludingVitalChainandEvernym

ostk:MVI


None
Period End2020-06-30
Value2500000.0
Percentage of RevenuefromContractwithCustomerExcludingVitalChainandEvernym100.0

ostk:SalesReturnsAdditionsToReserveForSalesReturns

ostk:SalesReturnsAdditionsToReserveForSalesReturns


None
Period End2020-06-302020-03-31
Value6625
Percentage of SalesReturnsAdditionsToReserveForSalesReturns100.0100.0

ostk:SalesRevenueNetPercentage

ostk:SalesRevenueNetPercentage


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1.001.01.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.0
Percentage of SalesRevenueNetPercentage100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0

ostk:SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingPercentage us-gaap:AwardType, us-gaap:Vesting

ostk:SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingPercentage

us-gaap:RestrictedStock, ostk:FirstYear


None
Period End2020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value00.3330000.3330000.3330000.333000.333000.333
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingPercentage0.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0100.00.00.0100.0

us-gaap:RestrictedStock, ostk:SecondYear


None
Period End2020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value00.3330000.3330000.3330000.333000.333000.333
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingPercentage0.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0100.00.00.0100.0

us-gaap:RestrictedStock, ostk:ThirdYear


None
Period End2020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value00.3330000.3330000.3330000.333000.333000.333
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingPercentage0.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0100.00.00.0100.0

ostk:Sharesdeclarednotdistributed us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

ostk:Sharesdeclarednotdistributed

ostk:SeriesA1PreferredStock, us-gaap:PreferredStock


None
Period End2020-06-302019-06-30
Value-6000.00
Percentage of Sharesdeclarednotdistributed100.00.0

ostk:TechnologyExpense

ostk:TechnologyExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3332333233353433323129282828282625252625242323222119181717181816151516171616151414
Percentage of TechnologyExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:TreasuryStockSharesAcquiredthroughBusinessCombination us-gaap:StatementEquityComponents

ostk:TreasuryStockSharesAcquiredthroughBusinessCombination

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0000047000.00000
Percentage of TreasuryStockSharesAcquiredthroughBusinessCombination0.00.00.00.00.0100.00.00.00.00.0

ostk:TreasuryStockValueAcquiredThroughBusinessCombination us-gaap:StatementEquityComponents

ostk:TreasuryStockValueAcquiredThroughBusinessCombination

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value00000643000.00000
Percentage of TreasuryStockValueAcquiredThroughBusinessCombination0.00.00.00.00.0100.00.00.00.00.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value44000.01686000.034000.027000.0-7000.01353000.048000.047000.0492000.02354000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value464000.0-58000.0418000.02655000.0-236000.0-3000.03866000.000-505000.00
Percentage of AdjustmentsToAdditionalPaidInCapitalOther100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0

us-gaap:NoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-464000.01837000.0-44000.0-2685000.00-581000.0-1653000.000505000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalOther-100.0-3167.2-10.5-101.1-0.019366.7-42.80.00.0-100.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-113000.00000425000.0-3098000.00000
Percentage of AdjustmentsToAdditionalPaidInCapitalOther-24.4-0.00.00.0-0.0-14166.7-80.10.00.0-0.00.0

us-gaap:AdvertisingExpense

us-gaap:AdvertisingExpense


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value323629292842498868504139334431302835272525342321202820161618121112161111
Percentage of AdvertisingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value863000.0190000.0123000.0184000.0-261000.0304000.0-592000.0-4000.0-230000.0965000.0371000.0-72000.0-627000.01317000.0-7355000.01291000.02102000.06181000.04876000.0-5557000.04312000.02659000.0905000.0-169000.0-3344000.04018000.0130000.0-38000.011000.0116000.0-79000.0302000.0158000.0121000.0-303000.0-84000.0278000.076000.0-115000.0-236000.0
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareAdditions us-gaap:PropertyPlantAndEquipmentByType

us-gaap:CapitalizedComputerSoftwareAdditions

us-gaap:SoftwareDevelopment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value4.6582.92.23.34.13.54.64.08.32.41.62.22.43.52.63.25.44.74.34.45.44.03.23.63.04.03.33.32.63.01.43.02.41.51.82.33.7
Percentage of CapitalizedComputerSoftwareAdditions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareAmortization1 us-gaap:PropertyPlantAndEquipmentByType

us-gaap:CapitalizedComputerSoftwareAmortization1

us-gaap:SoftwareDevelopment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value3.5773.43.43.23.13.23.83.43.23.43.73.94.14.34.45.03.83.83.63.93.73.2
Percentage of CapitalizedComputerSoftwareAmortization1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashDivestedFromDeconsolidation

us-gaap:CashDivestedFromDeconsolidation


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value04056000.000
Percentage of CashDivestedFromDeconsolidation0.0100.00.00.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-3205000.0-29198000.0-524000.0-2194000.0-8279000.0-34382000.0
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0

us-gaap:Depreciation

us-gaap:Depreciation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value6.636.6466.8756.4736.346.5756.9746.4536.4026.5816.9536.9867.2117.6987.5737.4156.1076.1896.1326.2325.8065.346
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Depreciation us-gaap:IncomeStatementLocation

ostk:Technology


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value4.7684.7715.6895.0424.8925.1755.7915.335.2965.4785.8025.946.1776.6856.9386.952
Percentage of Depreciation71.971.882.777.977.278.783.082.682.783.283.485.085.786.891.693.8

us-gaap:CostOfSales


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.1770.190.1710.170.1710.1750.1020.0850.0830.0830.0770.0720.0750.0830.0750.077
Percentage of Depreciation2.72.92.52.62.72.71.51.31.31.31.11.01.01.11.01.0

us-gaap:GeneralAndAdministrativeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1.6851.6851.0151.2611.2771.2251.0811.0381.0231.021.0740.9740.9590.930.4650.357
Percentage of Depreciation25.425.414.819.520.118.615.516.116.015.515.413.913.312.16.14.8

us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment

us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment


None
Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value0126000.001256000.0000
Percentage of EquityMethodInvestmentOtherThanTemporaryImpairment0.0100.00.0100.00.00.00.0

us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal

us-gaap:EquityMethodInvestmentRealizedGainLossOnDisposal


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value001048000.000524000.00000
Percentage of EquityMethodInvestmentRealizedGainLossOnDisposal0.00.0100.00.00.0100.00.00.00.00.0

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3545000.02468000.012656000.0-1864000.0-2033000.01025000.06373000.0-1123000.0-1032000.0
Percentage of EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-836000.0-1619000.05154000.0-700000.0220000.0-618000.0-1628000.0-72000.01836000.0
Percentage of EquitySecuritiesFvNiGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiRealizedGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value228000.0-90000.0848000.00720000.00000
Percentage of EquitySecuritiesFvNiRealizedGainLoss100.0100.0100.00.0100.00.00.00.00.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-1064000.0-1529000.04306000.0-700000.0-500000.0-618000.0-1628000.0-72000.01836000.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets1

us-gaap:GainLossOnDispositionOfAssets1


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.0100.00.0
Percentage of GainLossOnDispositionOfAssets10.0100.00.00.0

us-gaap:GainLossOnSaleOfBusiness

us-gaap:GainLossOnSaleOfBusiness


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.0100.00.0
Percentage of GainLossOnSaleOfBusiness0.0100.00.00.0

us-gaap:ImpairmentOfLongLivedAssetsHeldForUse

us-gaap:ImpairmentOfLongLivedAssetsHeldForUse


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value01406000.00000000000000
Percentage of ImpairmentOfLongLivedAssetsHeldForUse0.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-3545000.0-2468000.0-2812000.0-1864000.0-2033000.01025000.01400000.01200000.0-1031000.0350000.0426000.074000.0
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value56-1.3114-10.388-3.699-28.0239.3560.4572.3614.32514-5.193-10.145-20.456216.05-0.782-45.51557-3.3091.245-45.249496.42-2.023-31.909355.1452.805-15.729192.693-2.064-27.587273.738-0.484-28.029215.514
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value610.3388.402-3.3661.645-6.962-12.383-8.867179.27423-13.44-8.702-13.689250.3554.303-13.336132.848-10.24-10.3591811-1.123-13.71820-1.6150.055-0.7487.0194.874-0.141-12.211105.266-5.466-3.3074.0748.342
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value38411.8331.756
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-0.0080.0430.1280.793-0.8952.0030.0850.0310.267-73.8815.8861.990.806-1.0310.680.316-7.6841.987-0.167-1.605-1.698-0.832-0.3-0.292-2.317720.00.00.0
Percentage of IncreaseDecreaseInDeferredIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:IncreaseDecreaseInDeferredRevenue

us-gaap:IncreaseDecreaseInDeferredRevenue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value35121.309-0.4381.012-10.6410-2.7270.9320.2844.9632.368-1.05-1.5930.523-2.8131.258-8.1325.791-0.6872.098-4.7097.84.423-0.615-0.4787.463-0.001-1.672-6.889.5974.551-2.551-1.1646.798-0.274-0.665-1.9083.2770.564
Percentage of IncreaseDecreaseInDeferredRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value286000.0-457000.0-386000.0499000.0358000.0189000.0-1250000.0293000.01566000.02261000.02186000.0-26000.0-257000.0404000.0430000.0152000.0216000.0-12000.0314000.045000.0-79000.0-346000.0-33000.0-105000.0333000.0-221000.0-447000.0568000.0-70000.0-53000.0-893000.02049000.0-195000.0-694000.0172000.0218000.060000.0-290000.0-259000.0-803000.0
Percentage of IncreaseDecreaseInOtherNoncurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1736000.0-171000.0748000.0-290000.058000.027000.0184000.0-107000.0-260000.0-216000.0-90000.099000.063000.073000.045000.013000.0-12000.0554000.0199000.0257000.0334000.0979000.020000.09000.023000.0771000.02280000.0-127000.0-496000.0-84000.0-79000.0645000.0-33000.093000.0143000.0121000.054000.030000.0-260000.032000.0
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value4720000.0-1542000.0-483000.0-2162000.0-205000.0-3106000.0-1184000.0-3428000.09705000.0-1471000.0-3010000.0-2917000.08040000.01173000.0-5845000.0441000.06122000.0-3107000.0-2444000.0-1565000.06591000.0-1244000.0-2029000.0-2001000.05659000.0-174000.0-2459000.0-1806000.06263000.0-1462000.0-1608000.0-2576000.06046000.0-3156000.0-2762000.0-1103000.05440000.0-1119000.0-1544000.0383000.0
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value261000.0000000000000022000.00010000.0-20000.0092000.0177000.016000.0256000.0181000.0413000.0-25000.0680000.0569000.0422000.0156000.0307000.027000.022000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value614000.0272000.0315000.0449000.0630000.0403000.0661000.0383000.0620000.0544000.0209000.0189000.0136000.0125000.098000.073000.064000.091000.037000.037000.038000.043000.038000.036000.037000.041000.027000.034000.032000.034000.030000.030000.027000.029000.040000.023000.046000.052000.046000.055000.040000.0
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value1936000.02132000.02685000.02363000.02505000.0
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value2397000.02261000.02184000.02018000.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value4000.04000.04000.04000.04000.04000.03000.04000.04000.04000.0821000.052000.0-81000.0149000.01514000.0-64000.0-540000.0-1020000.0213000.0-907000.0588000.0-703000.0-621000.0000
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0000000000-760000.031000.0-55000.095000.0507000.0346000.0-349000.0715000.0-149000.0581000.0-351000.0438000.0387000.0000
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax0.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherOperatingActivitiesCashFlowStatement


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value335000.01625000.0-4034000.0929000.054000.01014000.0-30000.01350000.0-794000.0185000.0456000.0355000.027000.038000.0149000.0209000.0-15000.013000.006000.0-7000.010000.03000.0-1000.0-5000.0-5000.0
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet

us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value00126000.02750000.01256000.04601000.025000.0511000.000987000.0004500000.002850000.0000
Percentage of OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet0.00.0100.0100.0100.0100.0100.0100.00.00.0100.00.00.0100.00.0100.00.00.00.0

us-gaap:PartnersCapitalAccountUnitsConverted us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:PartnersCapitalAccountUnitsConverted

ostk:SeriesA1PreferredStock, us-gaap:PreferredStock


None
Period End2020-06-302019-09-302019-06-262019-06-302018-09-302018-06-30
Value0-2000.0122530.0-123000.000
Percentage of PartnersCapitalAccountUnitsConverted0.0100.0100.0100.00.00.0

us-gaap:SeriesAPreferredStock, us-gaap:PreferredStock


None
Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value0-123000.02000.0123000.0000
Percentage of PartnersCapitalAccountUnitsConverted0.00.0-100.0-100.00.00.00.0

us-gaap:SeriesBPreferredStock, us-gaap:PreferredStock


None
Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value04000.0-1000.0-1000.0000
Percentage of PartnersCapitalAccountUnitsConverted0.00.050.00.80.00.00.0

us-gaap:PaymentsForProceedsFromLoansReceivable

us-gaap:PaymentsForProceedsFromLoansReceivable


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-10-312016-09-302016-06-202016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value300000.01465000.01250000.002000000.0359000.02500000.0200000.000500000.00250000.0618000.0618000.00200000.0200000.02850000.005000000.0000
Percentage of PaymentsForProceedsFromLoansReceivable100.0100.0100.00.0100.0100.0100.0100.00.00.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.00.00.00.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value560000.099000.0-22000.0-28000.0-5000.02000.0-22000.0-12000.0-23000.01000.0193000.045000.0-327000.0442000.019000.0-16000.0-1000.0-29000.032000.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value44000.01686000.034000.027000.0-7000.01353000.048000.048000.0492000.04034000.0125000.019000.0263000.0822000.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.00.00.0-0.001-4.8850.00.01.143110.00.00.00.0-0.0280.0-0.043-1.1770.028100.00.00.0
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired0.00.00.0100.0100.00.00.0100.0100.00.00.00.00.0100.00.0100.0100.0100.0100.00.00.00.0

us-gaap:PaymentsToAcquireEquityMethodInvestments dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:StatementScenario

us-gaap:PaymentsToAcquireEquityMethodInvestments

ostk:TZero.comInc., ostk:BitsyInc., srt:ScenarioForecast


None
Period End2020-12-31
Value4.0
Percentage of PaymentsToAcquireEquityMethodInvestments100.0

ostk:TZero.comInc., ostk:BitsyInc., us-gaap:ScenarioForecast


None
Period End2020-12-31
Value4.0
Percentage of PaymentsToAcquireEquityMethodInvestments100.0

ostk:TZero.comInc., ostk:TZEROCryptoInc., srt:ScenarioForecast


None
Period End2020-12-31
Value4.0
Percentage of PaymentsToAcquireEquityMethodInvestments100.0

us-gaap:PaymentsToAcquireLongtermInvestments

us-gaap:PaymentsToAcquireLongtermInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.0850.0857.5352.6060.02.55.0611412161.01.02.4110.777
Percentage of PaymentsToAcquireLongtermInvestments100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value5.7613.6383.8727.3166.4424.1448.0037.9288.724.0292.7134.4235.10611121623191624126.6128.802178.8846.1954.0974.6743.2346.0621.9264.064.3762.1272.3972.322.3481.6761.1944.49
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.02.848300.02130-0.07940.00.00.0
Percentage of ProceedsFromIssuanceOfCommonStock0.0100.0100.00.0100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromIssuanceOfCommonStock us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.0330.01239-0.07940.00.0
Percentage of ProceedsFromIssuanceOfCommonStock0.00.0109.20.057.7128.9100.0100.00.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2579000.0-1413000.0-125000.0-155000.0-484000.0-522000.0-124000.0-124000.0-248000.00
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value1.7260.0419.1297.961
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0

us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction us-gaap:CounterpartyName, us-gaap:SubsidiarySaleOfStock

us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction

ostk:JonesTradingInstitutionalServicesLLC, ostk:AtTheMarketAgreement


None
Period End2020-06-302020-03-312019-09-302019-03-312018-09-30
Value0415900.005097400.02883300.0
Percentage of SaleOfStockNumberOfSharesIssuedInTransaction0.0100.00.0100.0100.0

us-gaap:SaleOfStockPercentageOfOwnershipAfterTransaction dei:LegalEntity, us-gaap:Ownership, us-gaap:SubsequentEventType

us-gaap:SaleOfStockPercentageOfOwnershipAfterTransaction

ostk:MediciLandGovernance, ostk:MediciVentures, us-gaap:SubsequentEvent


None
Period End2020-02-21
Value0.35
Percentage of SaleOfStockPercentageOfOwnershipAfterTransaction100.0

us-gaap:SaleOfStockPercentageOfOwnershipBeforeTransaction dei:LegalEntity, us-gaap:Ownership, us-gaap:SubsequentEventType

us-gaap:SaleOfStockPercentageOfOwnershipBeforeTransaction

ostk:MediciLandGovernance, ostk:MediciVentures, us-gaap:SubsequentEvent


None
Period End2020-02-21
Value0.57
Percentage of SaleOfStockPercentageOfOwnershipBeforeTransaction100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross dei:LegalEntity, us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

ostk:MediciVentures, us-gaap:EmployeeStockOption


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value00200.02350.025000.074750.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross0.00.0100.0100.0100.0100.00.0

ostk:TZero.comInc., us-gaap:EmployeeStockOption


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0-15002.0388940.03083800.020000.05589600.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross0.00.0194470.0131226.580.07477.7

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2000.0225000.03000.01000.03000.072000.03000.01000.014000.047000.0
Percentage of SharesPaidForTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value8000.011000.028000.028000.034000.0
Percentage of ShortTermLeaseCost100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesNewIssues us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0416000.04214000.00745000.02214000.002883000.000
Percentage of StockIssuedDuringPeriodSharesNewIssues0.0100.0100.00.0100.0100.00.0100.00.00.0

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8000.0671000.011000.04000.014000.0242000.08000.05000.055000.0166000.0
Percentage of StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value2.4653.2684.6064.4675.1713.9852.7022.2462.9732.3951.0860.9981.0280.9230.8740.8090.8160.7520.9030.9810.830.8130.640.703
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TransferToInvestments

us-gaap:TransferToInvestments


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value186000.01863000.0665000.00359000.0000200000.0499000.00869000.0002850000.0000
Percentage of TransferToInvestments100.0100.0100.00.0100.00.00.00.0100.0100.00.0100.00.00.0100.00.00.00.0

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value2039000.0-194000.0-346000.0-428000.0-333000.0-569000.0-640000.0-1055000.0-1495000.0-1186000.0-2574000.0-22000.0-204000.0-157000.0000
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value471000.0405000.0406000.0442000.0528000.0
Percentage of VariableLeaseCost100.0100.0100.0100.0100.0

ostk:AccruedAccountsPayableCurrent

ostk:AccruedAccountsPayableCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value369.8551512141015161916168.9569.7216172220108.4168.284
Percentage of AccruedAccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:AccruedFreightCurrent

ostk:AccruedFreightCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value118.6425.9547.7438.4377.0585.3436.7544.477.1875.045.0385.3743.293103.8685.1154.2762.7612.392
Percentage of AccruedFreightCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:CashEquivalentsFairValueDisclosure

ostk:CashEquivalentsFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value2.8142.8112.7993.0082.9912.9753.13520311552540405075452828283052601355876
Percentage of CashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:CashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value2.8142.8112.7993.0082.9912.9753.13520311552540405075452828283052601358068685858515676
Percentage of CashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.00.0100.0

ostk:ConcentrationOfRiskNumberOfBanks

ostk:ConcentrationOfRiskNumberOfBanks


None
Period End2020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value1.01.01.01.03.03.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.0
Percentage of ConcentrationOfRiskNumberOfBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ostk:MarketableSecuritiesandEquitySecuritiesFVNI

ostk:MarketableSecuritiesandEquitySecuritiesFVNI


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value2.64.3112.6
Percentage of MarketableSecuritiesandEquitySecuritiesFVNI100.0100.0100.0100.0

ostk:MinimumLiquidAssets us-gaap:LongtermDebtType

ostk:MinimumLiquidAssets

ostk:MezzanineNote


None
Period End2020-06-30
Value1000000.0
Percentage of MinimumLiquidAssets100.0

us-gaap:SeniorNotes


None
Period End2020-06-30
Value3000000.0
Percentage of MinimumLiquidAssets300.0

ostk:PreferredStockNumberofVotes

ostk:PreferredStockNumberofVotes


None
Period End2020-06-30
Value1.0
Percentage of PreferredStockNumberofVotes100.0

ostk:SalesReturnReserveForSalesReturnsCurrent

ostk:SalesReturnReserveForSalesReturnsCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1810117.89710111512151517121313181715131010
Percentage of SalesReturnReserveForSalesReturnsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:ExcessNetCapitalAt1500Percent dei:LegalEntity

srt:ExcessNetCapitalAt1500Percent

ostk:SpeedRouteLLC


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1171000.01057000.0705030.0652730.0615120.01152900.0
Percentage of ExcessNetCapitalAt1500Percent100.0100.0100.0100.0100.0100.0

ostk:TZEROATSLLC


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value134000.061000.0104520.08958.0
Percentage of ExcessNetCapitalAt1500Percent11.45.814.80.8

srt:MinimumNetCapitalRequiredForBrokerDealerSubsidiary1 dei:LegalEntity

srt:MinimumNetCapitalRequiredForBrokerDealerSubsidiary1

ostk:SpeedRouteLLC


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value364000.0370000.0144990.0129370.0165050.098725.0
Percentage of MinimumNetCapitalRequiredForBrokerDealerSubsidiary1100.0100.0100.0100.0100.0100.0

srt:NetCapital dei:LegalEntity

srt:NetCapital

ostk:SpeedRouteLLC


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1535000.01427000.0850020.0782100.0780170.01251600.0
Percentage of NetCapital100.0100.0100.0100.0100.0100.0

ostk:TZEROATSLLC


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value139000.066000.0109520.013958.0
Percentage of NetCapital9.14.612.91.1

us-gaap:AccruedMarketingCostsCurrent

us-gaap:AccruedMarketingCostsCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value211213109.434101413422825131920261312136.1727.632
Percentage of AccruedMarketingCostsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value1000000.02500000.02400000.02500000.02400000.02100000.01900000.01500000.01400000.01300000.01200000.02100000.02100000.02000000.02000000.0848000.0682000.0465000.0444000.0424000.0572000.0511000.0367000.0298000.0211000.0152000.0160000.0123000.0875000.0797000.0738000.0625000.0574000.0
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


None
Period End2020-06-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1534000.02474000.02116000.01253000.01999000.0465000.0511000.0152000.0797000.0574000.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value5.5447.148143.9294.6095.0885.85524351552540405075452828283052601355876
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value5.5447.148143.9294.6095.0885.85524351552540405075452828283052601358068685858515676483583
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.00.0100.00.00.00.0

us-gaap:CashEquivalentsAtCarryingValue

us-gaap:CashEquivalentsAtCarryingValue


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value2.82.83.03.03.03.120311552540405075452828283052601358068685858515676483381
Percentage of CashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value8954414040395046
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent

us-gaap:DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value112000.084000.0116000.0103000.0102000.096000.085000.093000.090000.086000.092000.076000.068000.065000.061000.057000.051000.046000.070000.065000.067000.063000.094000.0212000.0266000.0
Percentage of DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value112000.084000.0116000.0103000.0102000.096000.085000.093000.090000.086000.092000.076000.068000.065000.061000.057000.051000.046000.070000.065000.067000.063000.094000.088000.085000.079000.0212000.0240000.0285000.0255000.0266000.0244000.0215000.0302000.0
Percentage of DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.00.0100.00.00.00.0

us-gaap:DeferredRevenueCurrent

us-gaap:DeferredRevenueCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8954414040395039424146413940414144425045454348403636372929313828242627212124
Percentage of DeferredRevenueCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueCurrent us-gaap:DeferredRevenueArrangementType

ostk:ClubORewardPoints


None
Period End2020-06-302020-03-312019-12-312018-12-312017-12-31
Value8.06.86.76.8698.731
Percentage of DeferredRevenueCurrent8.912.616.013.618.8

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2518131411151216121610129.934118.9038.2956.6828.5589.1356.819
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions us-gaap:AwardType, dei:LegalEntity

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions

us-gaap:EmployeeStockOption, ostk:MediciVentures


None
Period End2020-06-30
Value282000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions100.0

us-gaap:RestrictedStock, ostk:TZero.comInc.


None
Period End2020-06-30
Value46000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions16.3

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:Ownership

us-gaap:EquityMethodInvestmentOwnershipPercentage

ostk:Finclusive


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value0.110.10.10.1
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0100.0

ostk:GrainChainInc.


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.180.180.180.10.10.10.1
Percentage of EquityMethodInvestmentOwnershipPercentage163.6180.0180.0100.00.00.00.0

ostk:MediciLandGovernance


None
Period End2020-06-30
Value0.35
Percentage of EquityMethodInvestmentOwnershipPercentage318.2

ostk:MediciLandGovernanceMemberDomain


None
Period End2020-03-31
Value0.35
Percentage of EquityMethodInvestmentOwnershipPercentage350.0

ostk:SettleMintNV


None
Period End2020-06-30
Value0.29
Percentage of EquityMethodInvestmentOwnershipPercentage263.6

ostk:SettleMintNVMember


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.290.290.30.30.30.3
Percentage of EquityMethodInvestmentOwnershipPercentage290.0290.0300.00.00.00.0

ostk:VinXNetworkLtd.


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.290.290.290.250.210.210.21
Percentage of EquityMethodInvestmentOwnershipPercentage263.6290.0290.0250.00.00.00.0

ostk:VoatzInc.


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.20.20.20.20.210.210.13
Percentage of EquityMethodInvestmentOwnershipPercentage181.8200.0200.0200.00.00.00.0

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value464937292832403925166.5
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value20191817161515141211109.2838.3357.3886.4432.4750.895
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsGross


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value303030303232292828251717171717171.13
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:LiabilitiesFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value112000.084000.0116000.0103000.0102000.096000.085000.093000.090000.086000.092000.01685000.01764000.01635000.01877000.04313000.04663000.03974000.02426000.02880000.01277000.02212000.01102000.0212000.0331000.0
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value112000.084000.0116000.0103000.0102000.096000.085000.093000.090000.086000.092000.076000.068000.065000.061000.057000.051000.046000.070000.065000.067000.063000.094000.088000.085000.079000.0212000.0240000.0285000.0255000.0266000.0244000.0215000.0302000.0
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.04.53.94.03.21.31.11.22.92.35.22.88.50.00.00.0100.00.00.00.080.40.00.00.0

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value000000000001609000.01696000.01570000.01816000.04256000.04612000.03928000.02356000.02815000.01210000.02149000.01008000.0000000
Percentage of LiabilitiesFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.095.596.196.096.898.798.998.897.197.794.897.291.50.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0000000000000000000000000000581000.0620000.065000.066000.0
Percentage of LiabilitiesFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.019.60.0

us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:LossContingencyAccrualAtCarryingValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2.39.69.69.4101010100.6410.6080.608
Percentage of LossContingencyAccrualAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyAccrualCarryingValueCurrent

us-gaap:LossContingencyAccrualCarryingValueCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2.3379.5559.559.359101110100.6410.6080.6080.059.4979.1559.173
Percentage of LossContingencyAccrualCarryingValueCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MarketableSecurities

us-gaap:MarketableSecurities


None
Period End2020-06-302020-03-312019-12-31
Value2.1223.83810
Percentage of MarketableSecurities100.0100.0100.0

us-gaap:MarketableSecurities us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


None
Period End2020-06-302020-03-312019-12-31
Value2.1223.83810
Percentage of MarketableSecurities100.0100.0100.0

us-gaap:MarketableSecuritiesCurrent

us-gaap:MarketableSecuritiesCurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value2.1223.838100.0
Percentage of MarketableSecuritiesCurrent100.0100.0100.00.0

us-gaap:MinimumNetWorthRequiredForCompliance us-gaap:LongtermDebtType

us-gaap:MinimumNetWorthRequiredForCompliance

ostk:MezzanineNote


None
Period End2020-06-30
Value15
Percentage of MinimumNetWorthRequiredForCompliance100.0

us-gaap:SeniorNotes


None
Period End2020-06-30
Value30
Percentage of MinimumNetWorthRequiredForCompliance200.0

us-gaap:NotesReceivableRelatedPartiesNoncurrent

us-gaap:NotesReceivableRelatedPartiesNoncurrent


None
Period End2020-06-302019-12-31
Value5200000.04600000.0
Percentage of NotesReceivableRelatedPartiesNoncurrent100.0100.0

us-gaap:OtherLongTermInvestments

us-gaap:OtherLongTermInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3.93.93.9111516201818136.5
Percentage of OtherLongTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PreferredStockSharesOutstanding us-gaap:StatementClassOfStock

us-gaap:PreferredStockSharesOutstanding

ostk:SeriesA1PreferredStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value4204000.04210000.04210000.03702000.0123000.00
Percentage of PreferredStockSharesOutstanding100.0100.0100.0100.0100.00.0

us-gaap:SeriesBPreferredStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value357000.0357000.0357000.0357000.0356000.0355000.0355000.0555000.0555000.0555000.0555000.0555000.0569000.0569000.0569.00
Percentage of PreferredStockSharesOutstanding8.58.58.59.6289.40.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStockSharesOutstanding us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

ostk:SeriesA1PreferredStock, us-gaap:PreferredStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value4204000.04210000.04210000.03702000.0123000.00000000
Percentage of PreferredStockSharesOutstanding100.0100.0100.0100.0100.00.00.00.00.00.00.00.0

us-gaap:SeriesAPreferredStock, us-gaap:PreferredStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value00003000.0127000.0127000.0127000.0127000.0127000.0127000.0127000.0
Percentage of PreferredStockSharesOutstanding0.00.00.00.02.40.00.00.00.00.00.00.0

us-gaap:SeriesBPreferredStock, us-gaap:PreferredStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value357000.0357000.0357000.0357000.0356000.0355000.0355000.0555000.0555000.0555000.0555000.0569000.0
Percentage of PreferredStockSharesOutstanding8.58.58.59.6289.40.00.00.00.00.00.00.0

us-gaap:PrepaidAdvertising

us-gaap:PrepaidAdvertising


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value245000.0138000.0677000.0367000.0478000.0961000.01191000.0992000.0834000.0987000.02300000.01100000.01200000.0843000.01900000.01100000.0982000.01244000.01900000.01000000.01400000.01518000.02000000.02000000.01000000.01356000.02100000.01300000.0569000.01200000.02100000.01100000.01400000.0
Percentage of PrepaidAdvertising100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2637000.02661000.02632000.02251000.02313000.02483000.01302000.01395000.0468000.0447000.0455000.0562000.0543000.0355000.0430000.0430000.0457000.0430000.0430000.0505000.0505000.0505000.0580000.01580000.01580000.01580000.01580000.01780000.01780000.01780000.01905000.02060000.02044000.02053000.02036000.02383000.02395000.02542000.0
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SalesAndExciseTaxPayableCurrentAndNoncurrent

us-gaap:SalesAndExciseTaxPayableCurrentAndNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value149.058109.8139.881109.923202.363
Percentage of SalesAndExciseTaxPayableCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:RestrictedStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-31
Value742000.0737000.01051000.01088000.01192000.01217000.0559000.0565000.0652000.0689000.0540000.0543000.0552000.0586000.0560000.0560000.0686000.0715000.0349000.0361000.0404000.0233000.0578000.0582000.0591000.0645000.0704000.0714000.0751000.0801000.01003000.01037000.01038000.0522000.0685000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-31
Value17.4517.8826.2226.1626.1426.1944.0844.8244.5343.3517.0516.4316.4317.1117.4617.5817.4918.424.824.8424.8322.1816.716.7116.7916.7310.7910.8110.6610.198.818.88.813.412.08
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TradingSecurities

us-gaap:TradingSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value108000.085000.0116000.0103000.0100000.095000.084000.088000.083000.078000.074000.070000.066000.063000.058000.055000.049000.044000.068000.062000.063000.059000.090000.0138000.0264000.0
Percentage of TradingSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TradingSecurities us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value108000.085000.0116000.0103000.0100000.095000.084000.088000.083000.078000.074000.070000.066000.063000.058000.055000.049000.044000.068000.062000.063000.059000.090000.085000.082000.075000.0138000.0110000.0264000.0
Percentage of TradingSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.0

us-gaap:TreasuryStockShares

us-gaap:TreasuryStockShares


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3553000.03551000.03326000.03323000.03322000.03319000.03200000.03197000.03196000.03182000.03135000.03132000.03131000.03115000.02463000.02463000.02448000.02428000.02400000.02399000.03308000.03307000.03204000.03203000.03203000.03202000.03124000.03124000.03124000.03124000.03030000.03030000.03030000.03030000.02962000.02960000.02960000.02862000.0
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept


us-gaap:SharesOutstanding
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:PreferredStockSharesIssued
us-gaap:StatementClassOfStock
(None,)
None
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementBusinessSegments
(None,)
None
us-gaap:CostOfGoodsAndServicesSold
us-gaap:StatementBusinessSegments
(None,)
None
us-gaap:GrossProfit
us-gaap:StatementBusinessSegments
(None,)
None
us-gaap:OperatingExpenses
us-gaap:StatementBusinessSegments
(None,)
None
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation
(None,)
None
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
us-gaap:StatementBusinessSegments
(None,)
None
us-gaap:NonoperatingIncomeExpense
us-gaap:StatementBusinessSegments
(None,)
None
COGS Ratio
us-gaap:StatementBusinessSegments
(None,)
None
Gross Margin
us-gaap:StatementBusinessSegments
(None,)
None
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
None
us-gaap:AmortizationOfIntangibleAssets
us-gaap:IncomeStatementLocation
(None,)
None
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
None