LGIH


Line plots across dimensions of each concept
Tables

Table of contents



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

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:Revenues
us-gaap:ProductOrService
us-gaap:StatementBusinessSegments

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GeneralAndAdministrativeExpense

us-gaap:OperatingIncomeLoss

us-gaap:InterestExpense

us-gaap:GainsLossesOnExtinguishmentOfDebt
us-gaap:AwardType
us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:Assets
us-gaap:StatementBusinessSegments

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:TreasuryStockValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardDate, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
us-gaap:AwardType
us-gaap:Range, us-gaap:StatementGeographical, us-gaap:RelatedPartyTransactionsByRelatedParty
lgih:AnnualPriceEscalationRate

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition
us-gaap:StatementEquityComponents

us-gaap:AmortizationOfFinancingCostsAndDiscounts
us-gaap:DebtInstrument
us-gaap:DebtInstrumentBasisSpreadOnVariableRate1
us-gaap:Range, us-gaap:DebtInstrument

us-gaap:IncomeTaxReconciliationOtherAdjustments

us-gaap:IncomeTaxesPaid

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes

us-gaap:IncreaseDecreaseInEarnestMoneyDepositsOutstanding

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestCostsCapitalizedAdjustment

us-gaap:InterestCostsIncurred

us-gaap:InterestPaid

us-gaap:NumberOfOperatingSegments

us-gaap:NumberOfReportableSegments

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherNonoperatingIncome

us-gaap:PaymentsForProceedsFromProductiveAssets

us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromNotesPayable

us-gaap:ProductWarrantyAccrualPayments

us-gaap:ProductWarrantyAccrualWarrantiesIssued

us-gaap:RepaymentsOfNotesPayable

us-gaap:SellingExpense
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardDate, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType
us-gaap:Range, us-gaap:AwardDate, us-gaap:AwardType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
us-gaap:AwardDate, us-gaap:AwardType
us-gaap:Range, us-gaap:AwardType
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:TreasuryStockSharesAcquired

lgih:CommitmentUnderLandPurchaseOptionAndDepositAgreement

lgih:InventoryRelatedObligations

lgih:LettersofCreditSuretyBondsandOtherFinancialGuarantees
us-gaap:DebtInstrument
lgih:LineofCreditFacilityAdditionalBorrowingCapacity
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrument
lgih:LineofcreditfacilityMaximumBorrowingCapacitybeforeAccordion
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

lgih:LotsUnderPurchaseOptionsRecorded
us-gaap:StatementGeographical, us-gaap:RelatedPartyTransactionsByRelatedParty

lgih:RefundableLandDepositsOfPurchaseContractsofFinishedLots

us-gaap:AccountsPayableCurrentAndNoncurrent

us-gaap:AccountsReceivableNet

us-gaap:AccruedIncomeTaxes

us-gaap:AccruedLiabilitiesAndOtherLiabilities
us-gaap:DebtInstrument
us-gaap:DebtInstrumentUnamortizedDiscount
us-gaap:DebtInstrument
us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:EarnestMoneyDeposits

us-gaap:EmployeeRelatedLiabilitiesCurrentAndNoncurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:InterestPayableCurrentAndNoncurrent

us-gaap:InventoryFinishedHomes

us-gaap:InventoryHomesUnderConstruction

us-gaap:InventoryOperativeBuilders

us-gaap:InventoryOperativeBuildersOther

us-gaap:InventoryRealEstateLandAndLandDevelopmentCosts

us-gaap:LandUnderPurchaseOptionsRecorded
us-gaap:DebtInstrument
us-gaap:LettersOfCreditOutstandingAmount
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrument, us-gaap:SubsequentEventType, us-gaap:VariableRate
us-gaap:LongTermDebtPercentageBearingVariableInterestRate
us-gaap:DebtInstrument, us-gaap:VariableRate

us-gaap:NotesPayable
us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:NotesPayableFairValueDisclosure

us-gaap:OperatingLeaseLiability

us-gaap:OtherAssets

us-gaap:OtherLiabilities

us-gaap:ProductWarrantyAccrual
us-gaap:StatementGeographical, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:PurchaseOptionsLand

us-gaap:RetentionPayable
us-gaap:AwardDate, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:AwardDate, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType

us-gaap:TreasuryStockShares

Tables

  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:CommonStockValue ███▅▅▅▄▄▄▄▃▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁▁0.2670.2660.2640.240.240.2390.2370.2370.2360.2360.2280.2270.2260.2260.2230.2230.220.2140.2130.210.2090.2090.2080.2080.2080.2080.208NANANA
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock███▅▅▅▅▄▄▄▃▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁▁26.69517926.68047426.39840923.98895623.97888323.9647323.74638523.71715323.63299123.61514622.8455822.73785922.61542922.59986122.3113122.28251422.02324821.42969421.27038921.00864920.90848220.90848220.84904420.76344920.76344920.76344920.763449NANANA
us-gaap:CommonStockSharesIssued ███▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▁26.69517926.68047426.39840923.98895623.97888323.9647323.74638523.71715323.63299123.61514622.8455822.73785922.61551922.59986122.3113122.28251422.02324821.42969421.27038921.00864920.90848220.90848220.84904420.76344920.76344920.76344920.7634490.001NANA
us-gaap:CommonStockSharesOutstanding ███▅▅▅▅▅▅▅▄▃▃▃▃▃▂▂▂▁▁▁▁▂▂▂▂25.08915125.07444625.35940922.94995622.93988322.9257322.70738522.71715322.63299122.61514621.8455821.73785921.61551921.59986121.3113121.28251421.02324820.42969420.27038920.00864919.90848219.90848219.84904420.76344920.76344920.76344920.763449NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█25.15307625.592835NA25.52194625.35739625.086183NA24.89656925.00064724.772027NA24.05038523.24258922.787652NA22.67402121.48701320.461073NA20.31853721.24687523.808813NA20.88182720.8689120.86270120.834124NANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█25.07482625.323119NA22.93990722.92615622.744726NA22.65845722.61608522.188121NA21.66858521.60226121.360167NA21.06187420.54480920.288619NA19.92307919.90848219.851686NA20.76344920.76344920.76344920.763449NANANA
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount ▁█0.0022670.026893NA0.0009260.0013790.035157NA0.0022450.0028710.025106NA0.0018730.0037580.049392NA0.0002340.0023750.022985NA0.000970.0058050.120452NA0.00.0001180.0NANANANA
us-gaap:EarningsPerShareBasic ▇▅█▆▆▃▆▅▆▄▅▅▅▂▃▃▃▂▃▃▂▁▁▁▂▁▁2.2200000000000003e-061.69e-062.69e-062.1499999999999997e-062.01e-068.100000000000001e-071.89e-061.66e-062.1099999999999997e-061.23e-061.6499999999999999e-061.55e-061.49e-065.5e-071.0900000000000002e-069.200000000000001e-071.01e-065.8e-077.900000000000001e-077.7e-077e-073.9e-073.7e-073.4000000000000003e-074.4e-072.2e-073.4000000000000003e-07NANANA
us-gaap:EarningsPerShareDiluted ▇▅█▆▆▃▆▅▆▄▅▅▅▂▃▃▃▂▃▃▂▁▁▁▂▁▁2.21e-061.6699999999999999e-062.52e-061.9299999999999997e-061.8200000000000002e-067.3e-071.72e-061.52e-061.8999999999999998e-061.1e-061.4299999999999999e-061.4e-061.3899999999999998e-065.2e-071.02e-068.6e-079.6e-075.699999999999999e-077.5e-077.6e-076.6e-073.3e-073.4000000000000003e-073.4000000000000003e-074.3e-072.2e-073.4000000000000003e-07NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:Revenues ▇▆█▇▆▄▆▅▆▄▆▅▅▃▄▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁481.602454.727605.649483.081461.83287.594425.16380.369419.847279.024404.975365.896324.178162.911236.83216.304222.723162.463176.764173.956158.826120.69108.4292.516106.41275.91965.45370238.04237.33921.96
us-gaap:CostOfGoodsAndServicesSold ▅▅█▅▅▁▄▃▄▁▄▃363.629348.163463.435366.431350.519221.29321.602283.035310.082209.765306.298274.0NANANANANANANANANANANANANANANANANANA
us-gaap:GeneralAndAdministrativeExpense ███▇▇▇▇▇▇▆▆▆▅▄▅▄▄▄▄▄▃▃▃▃▂▂▂▂▂▁20.17919.92320.82219.1418.9818.43818.80917.79418.30215.4415.28615.43113.6811.26512.00310.71510.4889.9529.218.9027.9438.2057.1876.1155.3375.1054.526164.0523.2671.759
us-gaap:OperatingIncomeLoss ▇▅█▆▆▃▆▅▆▃▅▅▅▂▄▃▃▂▃▃▃▂▂▂▂▁▁▁▁▁67.83453.87883.99764.02558.44121.07555.42951.6562.16230.8754.75250.44748.47516.12734.30629.09930.7417.32623.71423.04821.23711.67511.5299.90613.8737.0633.507075.2945.1542.428
us-gaap:InterestExpense ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂█▁▂0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0039460.0410.0010.004
us-gaap:GainsLossesOnExtinguishmentOfDebt 0.0NA0.00.0-0.1690.00.0-3.058-0.365-0.1750.00.0NANANANANANANANANANANANANANANA0.008614NANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:PerformanceShares█▅█▆▅▆▇▅▅▅▂▄▁▅▄▄▃▃▃▅▁▁1.50.91.61.10.91.21.30.90.90.90.30.70.11.00.80.70.50.60.50.90.20.2NANANANANANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:RestrictedStockUnitsRSU█▇▅▄▅▄▄▄▄▄▄▃▃▃▂▂▂▂▁▁▁0.90.80.60.50.60.50.50.50.50.40.40.30.30.30.20.20.20.20.10.10.1NANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▇▅█▆▆▃▆▅▆▃▅▅▅▂▄▃▃▂▃▃▃▂▂▂▂▁▂▁▁▁68.59754.88984.87164.73260.53521.69456.20948.99162.67131.22755.04150.87748.64216.84234.94729.48831.40817.82924.09223.22121.24611.72111.57410.53413.9047.0679.9175.2875.1022.497
us-gaap:IncomeTaxExpenseBenefit ▆▅█▆▆▂▆▅▆▂█▇▇▃▅▄▅▃▄▄▄▂▂▂▃▂▁▁▁▁12.97312.0520.00115.38314.483.3613.55611.26815.0633.92519.40117.1916.4435.06211.74210.02110.7496.1298.3617.8017.2694.0194.043.4884.8672.4730.7930720.1370.0890.047
us-gaap:NetIncomeLoss ▇▆█▆▆▃▆▅▆▄▅▅▄▂▄▃▃▂▃▃▃▂▁▂▂▁▂▂▂▁55.62442.83964.8749.34946.05518.33442.65337.72347.60827.30235.6433.68732.19911.7823.20519.46720.65911.715.73115.4213.9777.7020.07.0469.0374.5949.1315.5885.1582.45
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
 EBT Margin us-gaap:StatementBusinessSegments lgih:CentralReportableSegment█▁167.924165.775NANA189.894124.197NANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:StatementBusinessSegments lgih:FloridaReportableSegment█▁68.1440.072NANA48.18728.912NANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:StatementBusinessSegments lgih:NorthwestReportableSegment▁█56.369101.948NANA78.99636.254NANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:StatementBusinessSegments lgih:SoutheastReportableSegment█▁128.57788.447NANA77.8252.414NANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:StatementBusinessSegments lgih:WestReportableSegment█▁60.59258.485NANA66.93345.817NANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:Assets ████▇▇▇▆▆▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▂▂▂▁1636.3751719.0441666.1151636.1931486.061436.2031395.4731333.7871199.9191170.8541079.8921022.932931.68867.626814.514768.612707.448653.057622.333546.966503.149466.459438.127379.704304.105239.568221.0095840.001NANA
us-gaap:Liabilities ▇███▇▇▇▇▆▆▆▆▅▅▅▄▄▄▄▃▃▃▃▂▂▁▁717.593859.439820.922859.146760.825759.277739.53721.368631.237651.944590.046576.278525.319494.386459.313438.057406.516389.568374.944322.743298.087275.685255.628193.384125.07869.83356.635633NANANA
us-gaap:LiabilitiesAndStockholdersEquity ████▇▇▇▆▆▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▂▂▂▁1636.3751719.0441666.1151636.1931486.061436.2031395.4731333.7871199.9191170.8541079.8921022.932931.68867.626814.514768.612707.448653.057622.333546.966503.149466.459438.127379.704304.105239.568221.0095840.001NANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue ▄█▃▃▃▃▃▃▄▄▅▄▂▃▄▃▄▄▃▃▄▃▂▃▃▂▄▁▁▁49.102118.23238.34537.0337.55535.08446.62437.96948.88652.02467.57147.96827.331.64849.51845.91549.66647.57437.56836.46549.74739.00831.3746.16142.85125.65854.0687339.39115.2057.694
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:PropertyPlantAndEquipmentNet ▇▇▅▅▄▅▄▅▆▅▆▇▇▇▇█▇▇███▆▅▄▃▂▁1.8761.8881.6321.6311.4291.4781.4321.521.6751.6471.6741.8621.8771.9471.962.0371.951.9912.1082.0522.0761.6631.611.3731.1951.0490.844707NANANA
us-gaap:Goodwill ▁▁▁▁▁▁▁█▁▁▁▁▁▁▁12.01812.01812.01812.01812.01812.01812.01819.97912.01812.01812.01812.01812.01812.01812.018NANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset █▁█5.35.25.3NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ██▇▇▇▆▆▆▅▅▅▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▁918.782859.605845.193777.047725.235676.926655.943612.419568.682518.91489.846446.654406.361373.24355.201330.555300.932263.489247.389224.223205.062190.774182.499186.32179.027169.735164.3739510.001NANA
us-gaap:CommonStockValue ███▅▅▅▄▄▄▄▃▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁▁0.2670.2660.2640.240.240.2390.2370.2370.2360.2360.2280.2270.2260.2260.2230.2230.220.2140.2130.210.2090.2090.2080.2080.2080.2080.208NANANA
us-gaap:AdditionalPaidInCapital ███▇▇▇▇▇▆▆▆▅▅▅▅▄▄▃▂▂▂▁▁▁▁▁▁259.061255.509252.603249.351246.888244.635241.988239.611233.598231.434229.68222.129215.524214.602208.346206.905196.752179.974175.575168.143164.403164.092163.52158.325158.078157.823157.056NANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▇▆▆▅▅▅▄▄▄▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁708.845653.221610.382545.512496.163450.108431.774389.121351.398303.79276.488240.848207.161174.962163.182139.977120.5199.85188.15172.4257.043.02335.32127.78720.74111.7047.11NANANA
us-gaap:TreasuryStockValue ██▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁49.39149.39118.05618.05618.05618.05618.05616.5516.5516.5516.5516.5516.5516.5516.5516.5516.5516.5516.5516.5516.5516.5516.55NANANA0.0NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▁2.6131.853NA1.7591.6391.7831.7511.4021.4191.3511.5111.0970.351.231.0360.8350.7110.8140.6350.9730.3360.3350.2350.2470.2550.125NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▇▇▂▅▄▄▅▅▁▅▅▄▃▃▄▄▅▃▄▅▅▃▃▄▃▄▅▅▅87.26958.80362.225-85.26614.285-33.178-14.707-6.34615.254-110.9243.706-4.511-20.478-47.184-41.22-32.498-23.919-10.546-64.804-22.513.566-5.408-43.629-62.109-26.078-41.398-30.20748-10.897-8.392-4.992
us-gaap:NetCashProvidedByUsedInInvestingActivities ███████▁██████████████▇███▅███-0.143-1.542-0.193-1.277-0.112-0.211-0.714-73.857-0.214-0.153-0.016-0.179-0.152-0.171-0.151-0.213-0.173-0.185-0.225-0.4750.056-0.473-15.536-0.289-0.241-0.298-29.980894-0.097-0.646-0.535
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▆▄▇▅▆▆▇▅█▆▆▆▆▆▆▆▆▇▅▅▆▆▇▆▆█▅▆▅-156.25622.626-60.71786.018-11.70221.84924.07669.286-18.17895.5315.91325.35816.28229.48544.97428.9626.18420.73766.1329.7037.11713.51944.37465.70843.51213.285104.8656365.1816.5496.152
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▁█-69.1379.887NANA2.471-11.54NANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▇▇▂▅▄▄▅▅▁▅▅▄▃▃▄▄▅▃▄▅▅▃▃▄▃▄▅▅▅87.26958.80362.225-85.26614.285-33.178-14.707-6.34615.254-110.9243.706-4.511-20.478-47.184-41.22-32.498-23.919-10.546-64.804-22.513.566-5.408-43.629-62.109-26.078-41.398-30.20748-10.897-8.392-4.992
us-gaap:NetIncomeLoss ▇▆█▆▆▃▆▅▆▄▅▅▄▂▄▃▃▂▃▃▃▂▁▂▂▁▂▂▂▁55.62442.83964.8749.34946.05518.33442.65337.72347.60827.30235.6433.68732.19911.7823.20519.46720.65911.715.73115.4213.9777.7020.07.0469.0374.5949.1315.5885.1582.45
us-gaap:DepreciationDepletionAndAmortization ▃▃▃▃▃▃▃▄▄▄▄▄▄▄▅▅▆█▅▅▅▄█▃▃▃▂▁▁▁0.1560.1610.1560.1610.1610.1650.1680.1770.1860.180.1910.1940.1950.2110.2170.2230.2830.3660.2360.2250.2160.2060.3540.170.1570.1440.0926110.0680.0670.064
us-gaap:IncreaseDecreaseInAccountsReceivable ▇▃▇▅▇▃▇▅▇▁▇▅█▅▅▅▅▄▅▅▅▆▅▅▆▅▆▅▅▅13.224-11.38510.962.22311.22-10.84911.457-0.36710.086-23.04611.99-1.42116.9870.0951.4140.5681.304-3.5561.5021.0491.7915.618-2.3490.4893.6840.1393.188924-1.1131.7820.013
us-gaap:IncreaseDecreaseInInventories ▁▁▃█▄▄▄▄▃▇▃▅▄▅▄▅▄▃▅▄▃▃▄▅▄▃▃▃▃▂-23.833-17.90216.73150.2538.41761.25440.27750.93823.143120.30616.94367.01246.39170.26340.82966.43347.72828.89466.30851.6719.18614.54354.82368.22539.75335.55636.2845517.60914.1726.53
us-gaap:ShareBasedCompensation █▆▇▆▅▆▆▅▅▅▅▄▂▄▄▃▃▃▃▄▂▂▂▂▂▁▁▁▁▁2.6131.8532.3581.7591.6391.7831.7651.4021.4191.3511.5111.0970.351.231.0360.8350.7110.8140.6350.9730.3360.3350.2350.2470.2550.1250.0428140.00.00.0
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ███████▁██████████████▇███▅███-0.143-1.542-0.193-1.277-0.112-0.211-0.714-73.857-0.214-0.153-0.016-0.179-0.152-0.171-0.151-0.213-0.173-0.185-0.225-0.4750.056-0.473-15.536-0.289-0.241-0.298-29.980894-0.097-0.646-0.535
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▆▄▇▅▆▆▇▅█▆▆▆▆▆▆▆▆▇▅▅▆▆▇▆▆█▅▆▅-156.25622.626-60.71786.018-11.70221.84924.07669.286-18.17895.5315.91325.35816.28229.48544.97428.9626.18420.73766.1329.7037.11713.51944.37465.70843.51213.285104.8656365.1816.5496.152
us-gaap:PaymentsForRepurchaseOfCommonStock ▁█0.031.335NANA0.00.0NANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value267000.0266000.0264000.0240000.0240000.0239000.0237000.0237000.0236000.0236000.0228000.0227000.0226000.0226000.0223000.0223000.0220000.0214000.0213000.0210000.0209000.0209000.0208000.0208000.0208000.0208000.0208000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.1

None

us-gaap:SharesOutstanding us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value2626262323232323232322222222222222212121202020202020200.00.00.0
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

None

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-07-09
Value2626262323232323232322222222222222212121202020202020200.0010.001
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value252525222222222222222121212121212120202019191920202020
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-31
Value252525252524252424232222212020212320202020
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-31
Value252522222222222221212121202019191920202020
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value2267.026893.0926.01379.035157.02245.02871.025106.01873.03758.049392.0234.02375.022985.0970.05805.0120450.00118.00
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0

None

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value2.221.692.692.152.010.811.891.662.111.231.651.551.490.551.090.921.010.580.790.770.70.390.370.340.440.220.34
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value2.211.672.521.931.820.731.721.521.91.11.431.41.390.521.020.860.960.570.750.760.660.330.340.340.430.220.34
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:Revenues

us-gaap:Revenues


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
Value481454605483461287425380419279404365324162236216222162176173158120108921067565383721
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ProductOrService

lgih:Wholesale


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
Value38447325186.1294826276.9867.09318131.416
Percentage of Revenues7.99.712.15.44.02.111.47.06.62.51.85.04.30.9
Percentage of Revenues7.99.712.15.44.02.111.47.06.62.51.85.04.30.9
Percentage of Revenues lgih:Wholesale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Retail


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value443410532457443281376353392272397347
Percentage of Revenues92.190.387.994.696.097.988.693.093.497.598.295.0
Percentage of Revenues92.190.387.994.696.097.988.693.093.497.598.295.0
Percentage of Revenues us-gaap:Retail100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:StatementBusinessSegments

lgih:CentralReportableSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value167165189124
Percentage of Revenues34.936.541.143.2
Percentage of Revenues34.936.541.143.2
Percentage of Revenues lgih:CentralReportableSegment100.0100.0100.0100.0

lgih:FloridaReportableSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value68404828
Percentage of Revenues14.18.810.410.1
Percentage of Revenues14.18.810.410.1
Percentage of Revenues lgih:FloridaReportableSegment100.0100.0100.0100.0

lgih:NorthwestReportableSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value561017836
Percentage of Revenues11.722.417.112.6
Percentage of Revenues11.722.417.112.6
Percentage of Revenues lgih:NorthwestReportableSegment100.0100.0100.0100.0

lgih:SoutheastReportableSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value128887752
Percentage of Revenues26.719.516.918.2
Percentage of Revenues26.719.516.918.2
Percentage of Revenues lgih:SoutheastReportableSegment100.0100.0100.0100.0

lgih:WestReportableSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value60586645
Percentage of Revenues12.612.914.515.9
Percentage of Revenues12.612.914.515.9
Percentage of Revenues lgih:WestReportableSegment100.0100.0100.0100.0

None

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value363348463366350221321283310209306274
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues75.576.676.575.975.976.975.674.473.975.275.674.9

None

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value20192019181818171815151513111210109.9529.218.9027.9438.2057.1876.1155.3375.1054.526164.0523.2671.759
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.24.43.44.04.16.44.44.74.45.53.84.24.26.95.15.04.76.15.25.15.06.86.66.65.06.76.910.78.78.0

None

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value67538364582155516230545048163429301723232111119.906137.0633.507075.2945.1542.428
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues14.111.813.913.312.77.313.013.614.811.113.513.815.09.914.513.513.810.713.413.213.49.710.610.713.09.35.413.913.811.1

None

us-gaap:InterestExpense

us-gaap:InterestExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value000000000000000000000000003946.041000.01000.04000.0
Percentage of InterestExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0
Percentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.00.0

None

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


None
Period End2020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-09-30
Value000-169000.000-3058000.0-365000.0-175000.0008614.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.00.00.0100.00.00.0100.0100.0100.00.00.0100.0
Percentage of Revenues0.00.00.0-0.00.00.0-0.8-0.1-0.10.00.00.0

None

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:PerformanceShares


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
Value1500000.0900000.01600000.01100000.0900000.01200000.01300000.0900000.0900000.0900000.0300000.0700000.0100000.01000000.0800000.0700000.0500000.0600000.0500000.0900000.0200000.0200000.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.30.20.30.20.20.40.30.20.20.30.10.20.00.60.30.30.20.40.30.50.10.2
Percentage of Revenues us-gaap:PerformanceShares0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value900000.0800000.0600000.0500000.0600000.0500000.0500000.0500000.0500000.0400000.0400000.0300000.0300000.0300000.0200000.0200000.0200000.0200000.0100000.0100000.0100000.0
Percentage of AllocatedShareBasedCompensationExpense60.088.937.545.566.741.738.555.655.644.4133.342.9300.030.025.028.640.033.320.011.150.0
Percentage of Revenues0.20.20.10.10.10.20.10.10.10.10.10.10.10.20.10.10.10.10.10.10.1
Percentage of Revenues us-gaap:RestrictedStockUnitsRSU0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


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
Value685484646021564862315550481634293117242321111110137.0679.9175.2875.1022.4972.393.7822.4171.433
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues14.212.114.013.413.17.513.212.914.911.213.613.915.010.314.813.614.111.013.613.313.49.710.711.413.19.315.213.913.711.40.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:StatementBusinessSegments

lgih:CentralReportableSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value29243214
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest43.244.253.867.5
Percentage of Revenues6.15.37.15.1
Percentage of Revenues lgih:CentralReportableSegment17.614.617.211.8

lgih:FloridaReportableSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value7.8682.5254.5521.215
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest11.54.67.55.6
Percentage of Revenues1.60.61.00.4
Percentage of Revenues lgih:FloridaReportableSegment11.56.39.44.2

lgih:NorthwestReportableSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value8.47816113.376
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest12.430.119.615.6
Percentage of Revenues1.83.62.61.2
Percentage of Revenues lgih:NorthwestReportableSegment15.016.215.09.3

lgih:SoutheastReportableSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value167.9085.7450.415
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest24.614.49.51.9
Percentage of Revenues3.51.71.20.1
Percentage of Revenues lgih:SoutheastReportableSegment13.18.97.40.8

lgih:WestReportableSegment


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value6.9465.2727.233.107
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest10.19.611.914.3
Percentage of Revenues1.41.21.61.1
Percentage of Revenues lgih:WestReportableSegment11.59.010.86.8

us-gaap:CorporateNonSegment


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
Value-1.185-1.577-2.83-1.879-1.438-1.066-4.105-3.889-2.032-0.421-1.159-0.903-1.391-0.02
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-1.7-2.9-3.3-2.9-2.4-4.9-7.3-7.9-3.2-1.3-2.1-1.8-2.9-0.1
Percentage of Revenues-0.2-0.3-0.5-0.4-0.3-0.4-1.0-1.0-0.5-0.2-0.3-0.2-0.4-0.0
Percentage of Revenues us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value12122015143.361311153.9251917165.0621110106.1298.3617.8017.2694.0194.043.4884.8672.4730.7930720.1370.0890.047
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.72.63.33.23.11.23.23.03.61.44.84.75.13.15.04.64.83.84.74.54.63.33.73.84.63.31.20.40.20.2

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value5542644946184237472735333211231920111515137.7020.07.0469.0374.5949.1315.5885.1582.452.3323.6552.3841.334
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues11.59.410.710.210.06.410.09.911.39.88.89.29.97.29.89.09.37.28.98.98.86.40.07.68.56.114.014.713.811.20.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value554249461842374727
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues11.59.410.210.06.410.09.911.39.8
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

None

us-gaap:Assets

us-gaap:Assets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value1636171916661636148614361395133311991170107910229318678147687076536225465034664383793042392210.00145
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

lgih:CentralReportableSegment


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value622635637569
Percentage of Assets38.036.938.240.8
Percentage of Assets38.036.938.240.8
Percentage of Assets lgih:CentralReportableSegment100.0100.0100.0100.0

lgih:FloridaReportableSegment


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value143149149106
Percentage of Assets8.88.79.07.6
Percentage of Assets8.88.79.07.6
Percentage of Assets lgih:FloridaReportableSegment100.0100.0100.0100.0

lgih:NorthwestReportableSegment


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value212195221200
Percentage of Assets13.011.413.314.4
Percentage of Assets13.011.413.314.4
Percentage of Assets lgih:NorthwestReportableSegment100.0100.0100.0100.0

lgih:SoutheastReportableSegment


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value408419410300
Percentage of Assets25.024.424.721.6
Percentage of Assets25.024.424.721.6
Percentage of Assets lgih:SoutheastReportableSegment100.0100.0100.0100.0

lgih:WestReportableSegment


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value183186193161
Percentage of Assets11.210.911.611.6
Percentage of Assets11.210.911.611.6
Percentage of Assets lgih:WestReportableSegment100.0100.0100.0100.0

us-gaap:CorporateNonSegment


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
Value6613353474846564554729363
Percentage of Assets4.17.83.22.93.23.24.13.44.56.28.77.8
Percentage of Assets4.17.83.22.93.23.24.13.44.56.28.77.8
Percentage of Assets us-gaap:CorporateNonSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:Liabilities

us-gaap:Liabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value717859820859760759739721631651590576525494459438406389374322298275255193125695620
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets43.950.049.352.551.252.953.054.152.655.754.656.356.457.056.457.057.559.760.259.059.259.158.350.941.129.125.644.7

None

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value1636171916661636148614361395133311991170107910229318678147687076536225465034664383793042392210.00145
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-31
Value49118383737354637485267472731494549473736493931464225549.391157.6947.0694715.1061835.257279
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.06.92.32.32.52.43.32.84.14.46.34.72.93.66.16.07.07.36.06.79.98.47.212.214.110.724.5939100.00.00.015.50.00.0

None

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value1876000.01888000.01632000.01631000.01429000.01478000.01432000.01520000.01675000.01647000.01674000.01862000.01877000.01947000.01960000.02037000.01950000.01991000.02108000.02052000.02076000.01663000.01610000.01373000.01195000.01049000.0844710.0719390.0
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.30.30.30.30.40.40.40.40.40.40.40.41.6

None

us-gaap:Goodwill

us-gaap:Goodwill


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value121212121212121912121212121212
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.70.70.70.80.80.91.51.01.01.11.21.31.41.5

None

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


None
Period End2020-06-302020-03-312019-12-312019-01-01
Value5300000.05200000.05300000.05400000.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0
Percentage of Assets0.30.30.30.0

None

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-312010-12-31
Value9188598457777256766556125685184894464063733553303002632472242051901821861791691640.001251411
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets56.150.050.747.548.847.147.045.947.444.345.443.743.643.043.643.042.540.339.841.040.840.941.749.158.970.974.4100.055.30.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value2592552522492462442412392332312292222152142082061961791751681641641631581581571570.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest28.229.729.932.134.036.136.939.141.144.646.949.753.057.558.762.665.468.371.075.080.286.089.685.088.393.095.50.00.00.0
Percentage of Assets15.814.915.215.216.617.017.318.019.519.821.321.723.124.725.626.927.827.628.230.732.735.237.341.752.065.971.10.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value0.2670.2660.2640.240.240.2390.2370.2370.2360.2360.2280.2270.2260.2260.2230.2230.220.2140.2130.210.2090.2090.2080.2080.2080.2080.2076340.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value7086536105454964504313893513032762402071741631391209988725743352720117.1101260.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest77.276.072.270.268.466.565.863.561.858.556.453.951.046.945.942.340.037.935.632.327.822.619.414.911.66.94.30.00.00.0
Percentage of Assets43.338.036.633.333.431.330.929.229.325.925.623.522.220.220.018.217.015.314.213.211.39.28.17.36.84.93.20.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value-49.391-49.391-18.056-18.056-18.056-18.056-18.056-16.55-16.55-16.5516-16.55-16.55-16.5516-16.55-16.5516-16.55-16.55-16.55-16.55-16.550.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-5.4-5.7-2.1-2.3-2.5-2.7-2.8-2.7-2.9-3.23.4-3.7-4.1-4.44.7-5.0-5.56.3-6.7-7.4-8.1-8.7-9.10.0
Percentage of Assets-3.0-2.9-1.1-1.1-1.2-1.3-1.3-1.2-1.4-1.41.5-1.6-1.8-1.92.0-2.2-2.32.5-2.7-3.0-3.3-3.5-3.80.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value267000.0266000.0264000.0240000.0240000.0239000.0237000.0237000.0236000.0236000.0228000.0227000.0226000.0226000.0223000.0223000.0220000.0214000.0213000.0210000.0209000.0209000.0208000.0208000.0208000.0208000.0208000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.1

None

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value259255252249246244241239233231229222215214208206196179175168164164163158158157157
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.814.915.215.216.617.017.318.019.519.821.321.723.124.725.626.927.827.628.230.732.735.237.341.752.065.971.1

None

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value7086536105454964504313893513032762402071741631391209988725743352720117.11
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets43.338.036.633.333.431.330.929.229.325.925.623.522.220.220.018.217.015.314.213.211.39.28.17.36.84.93.2

None

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value49491818181818161616161616161616161616161616160.0
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets3.02.91.11.11.21.31.31.21.41.41.51.61.81.92.02.22.32.52.73.03.33.53.80.0

None

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value2613000.01853000.01759000.01639000.01783000.01751000.01402000.01419000.01351000.01511000.01097000.0350000.01230000.01036000.0835000.0711000.0814000.0635000.0973000.0336000.0335000.0235000.0247000.0255000.0125000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value2613000.01853000.01759000.01639000.01783000.01751000.01402000.01419000.01351000.01511000.01097000.0350000.01230000.01036000.0835000.0711000.0814000.0635000.0973000.0336000.0335000.0235000.0247000.0255000.0125000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value875862-85.26614-33.178-14.707-6.34615-110.9243.706-4.511-20.478-47.184-41.22-32.498-23.919-10.546-64.804-22.513.566-5.408-43.629-62.109-26.078-41.398-30.20748-10.897-8.392-4.992
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues18.112.910.3-17.73.1-11.5-3.5-1.73.6-39.80.9-1.2-6.3-29.0-17.4-15.0-10.7-6.5-36.7-12.92.2-4.5-40.2-67.1-24.5-54.5-46.2-28.6-22.5-22.7

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-143000.0-1542000.0-193000.0-1277000.0-112000.0-211000.0-714000.0-73857000.0-214000.0-153000.0-16000.0-179000.0-152000.0-171000.0-151000.0-213000.0-173000.0-185000.0-225000.0-475000.056000.0-473000.0-15536000.0-289000.0-241000.0-298000.0-29981000.0-97000.0-646000.0-535000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.0-0.3-0.0-0.3-0.0-0.1-0.2-19.4-0.1-0.1-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.30.0-0.4-14.3-0.3-0.2-0.4-45.8-0.3-1.7-2.4

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-156.25622-60.71786-11.702212469-18.178951525162944282620669.7037.11713446543131045.18166.152
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-32.45.0-10.017.8-2.57.65.718.2-4.334.23.96.95.018.119.013.411.812.837.45.64.511.240.971.040.917.5160.213.644.328.0

None

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-69.13792.471-11.54
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0
Percentage of Revenues-14.417.60.5-4.0

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value875862-85.26614-33.178-14.707-6.34615-110.9243.706-4.511-20.478-47.184-41.22-32.498-23.919-10.546-64.804-22.513.566-5.408-43.629-62.109-26.078-41.398-30.20748-10.897-8.392-4.992
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues18.112.910.3-17.73.1-11.5-3.5-1.73.6-39.80.9-1.2-6.3-29.0-17.4-15.0-10.7-6.5-36.7-12.92.2-4.5-40.2-67.1-24.5-54.5-46.2-28.6-22.5-22.7

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value5542644946184237472735333211231920111515137.7020.07.0469.0374.5949.1315.5885.1582.452.3323.6552.3841.334
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues11.59.410.710.210.06.410.09.911.39.88.89.29.97.29.89.09.37.28.98.98.86.40.07.68.56.114.014.713.811.20.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value554249461842374727
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues11.59.410.210.06.410.09.911.39.8
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

None

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


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
Value156000.0161000.0156000.0161000.0161000.0165000.0168000.0177000.0186000.0180000.0191000.0194000.0195000.0211000.0217000.0223000.0283000.0366000.0236000.0225000.0216000.0206000.0354000.0170000.0157000.0144000.092611.068000.067000.064000.0
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value13-11.385102.22311-10.84911-0.36710-23.04611-1.421160.0951.4140.5681.304-3.5561.5021.0491.7915.618-2.3490.4893.6840.1393.188924-1.1131.7820.013
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-23.833-17.902161503861405023120166746704066472866511914546839353617146.53
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2613000.01853000.02358000.01759000.01639000.01783000.01765000.01402000.01419000.01351000.01511000.01097000.0350000.01230000.01036000.0835000.0711000.0814000.0635000.0973000.0336000.0335000.0235000.0247000.0255000.0125000.042814.0000
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-143000.0-1542000.0-193000.0-1277000.0-112000.0-211000.0-714000.0-73857000.0-214000.0-153000.0-16000.0-179000.0-152000.0-171000.0-151000.0-213000.0-173000.0-185000.0-225000.0-475000.056000.0-473000.0-15536000.0-289000.0-241000.0-298000.0-29981000.0-97000.0-646000.0-535000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.0-0.3-0.0-0.3-0.0-0.1-0.2-19.4-0.1-0.1-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.30.0-0.4-14.3-0.3-0.2-0.4-45.8-0.3-1.7-2.4

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-156.25622-60.71786-11.702212469-18.178951525162944282620669.7037.11713446543131045.18166.152
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-32.45.0-10.017.8-2.57.65.718.2-4.334.23.96.95.018.119.013.411.812.837.45.64.511.240.971.040.917.5160.213.644.328.0

None

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.0310.00.0
Percentage of PaymentsForRepurchaseOfCommonStock0.0100.00.00.0

None

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


None
Period End2020-06-302017-03-312016-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.1890.3010.3440.001-0.00600.350.0260.00100.02
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0

None

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardDate, us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

lgih:TwoThousandTwenty, us-gaap:PerformanceShares


None
Period End2020-06-302020-03-31
Value088538.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value088538.000083367.000061898.0000111040.000087605.000127110.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value2065.046701.012676.01006.01585.047245.014030.02298.03498.035048.08477.02240.03883.061986.013034.0274.02767.046378.018884.0864.06713.058723.018015.01054.01976.061396.024089.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.052.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

lgih:AnnualPriceEscalationRate us-gaap:Range, us-gaap:StatementGeographical, us-gaap:RelatedPartyTransactionsByRelatedParty

lgih:AnnualPriceEscalationRate

srt:Maximum, stpr:FL, srt:AffiliatedEntity


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.060000.060
Percentage of AnnualPriceEscalationRate100.00.00.00.0100.00.0

srt:Minimum, stpr:FL, srt:AffiliatedEntity


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.030000.030
Percentage of AnnualPriceEscalationRate50.00.00.00.050.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition


None
Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value222000.0217000.004000000.00181000.0000167000.0000138000.0000238000.0000642000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition100.0100.00.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value222000.0217000.003999000.00181000.0000167000.0000138000.0000238000.0000642000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition100.0100.00.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0

us-gaap:AmortizationOfFinancingCostsAndDiscounts

us-gaap:AmortizationOfFinancingCostsAndDiscounts


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value700000.0700000.0900000.01100000.01000000.01100000.01100000.01300000.01400000.0800000.01100000.01000000.01000000.0900000.0800000.0800000.01000000.01000000.0900000.0900000.01100000.0900000.0700000.0300000.0300000.0
Percentage of AmortizationOfFinancingCostsAndDiscounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:DebtInstrument

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

us-gaap:RevolvingCreditFacility


None
Period End2020-03-312016-03-31
Value0.0250.035
Percentage of DebtInstrumentBasisSpreadOnVariableRate1100.0100.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:Range, us-gaap:DebtInstrument

srt:Maximum, us-gaap:RevolvingCreditFacility


None
Period End2020-03-31
Value0.0275
Percentage of DebtInstrumentBasisSpreadOnVariableRate1110.0

srt:Minimum, us-gaap:RevolvingCreditFacility


None
Period End2020-03-31
Value0.0235
Percentage of DebtInstrumentBasisSpreadOnVariableRate194.0

us-gaap:IncomeTaxReconciliationOtherAdjustments

us-gaap:IncomeTaxReconciliationOtherAdjustments


None
Period End2020-06-30
Value3500000.0
Percentage of IncomeTaxReconciliationOtherAdjustments100.0

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


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
Value0.5181.714210.26.81220420.12.0140.0280.97.75.2131.84.44.03.23.80.01.0-0.1841280.10.10.0
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-3.6566.571-16.5096.4427.8725.449-8.65-2.002-5.84413-14.0517.064-0.9137.643-6.253-3.4571.254-3.291-4.5914.7567.1132.3520.031-3.9035.983-0.6312.5702580.0362.2320.989
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities


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
Value18-21.071374.6966.37-13.323.691144.493-48.361824161.155-15.253155.3153.138-8.575115.793-0.152-2.0652.8210.8091.1871.0302682.0711.327-0.397
Percentage of IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1386000.0-2320000.01833000.0773000.0875000.0-1650000.0-1060000.01689000.01027000.0-932000.0-261000.01722000.01608000.0-977000.01610000.0619000.0727000.0-394000.0-1249000.0503000.0
Percentage of IncreaseDecreaseInDeferredIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInEarnestMoneyDepositsOutstanding

us-gaap:IncreaseDecreaseInEarnestMoneyDepositsOutstanding


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-6.6870.204-2.892-5.8542.293-2.054-1.0859.2424.9535.7434.7070.7151.8820.911-0.799-1.2683.4562.261-0.878-0.0570.866-2.808-2.96-0.589-0.738100.0314180.6120.7191.343
Percentage of IncreaseDecreaseInEarnestMoneyDepositsOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


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
Value2124000.02953000.0-573000.0281000.0-4824000.0-1112000.04745000.0-319000.0-6235000.03207000.04785000.03036000.01911000.0-1089000.01005000.0-1447000.0-1074000.0-3956000.02485000.02465000.01102000.0-1257000.028000.0349000.0-441000.0681000.0-1864200.01258000.0505000.080000.0
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares


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
Value78250.0269720.037537.0246020.0188310.0297960.032479.0259340.0218230.0366570.085272.0344140.0223160.0266160.0123100.072094.059635.041512.04633.048833.035954.06395.0
Percentage of IncrementalCommonSharesAttributableToContingentlyIssuableShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value00-256800.02336000.02242900.02000000.0-98831.01978800.02166300.02217300.0375650.02000000.01400000.01161300.075923.01540100.0882570.0130940.04633.048833.035954.06395.0-5056.0118380.0105460.099252.070675.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestCostsCapitalizedAdjustment

us-gaap:InterestCostsCapitalizedAdjustment


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
Value9.262101110121111108.7877.1936.6476.5266.0285.0744.9584.5474.6044.3483.8513.4683.5193.362.7631.5861.0780.5990.4509760.3440.2530.28
Percentage of InterestCostsCapitalizedAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestCostsIncurred

us-gaap:InterestCostsIncurred


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
Value9.262101110121111108.7877.1936.6476.5266.0285.0744.9584.5474.6044.3483.8513.4683.5193.362.7631.5861.0780.5990.4549220.3850.2540.284
Percentage of InterestCostsIncurred100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaid

us-gaap:InterestPaid


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
Value3.676156.733146.199145.594.5178.15.176.4324.3615.7523.1594.8622.7844.4312.2633.5731.5543.261.3781.5891.0850.7690.6650.4513340.2810.2590.229
Percentage of InterestPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NumberOfOperatingSegments

us-gaap:NumberOfOperatingSegments


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value07.000
Percentage of NumberOfOperatingSegments0.0100.00.00.0

us-gaap:NumberOfReportableSegments

us-gaap:NumberOfReportableSegments


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value05.000
Percentage of NumberOfReportableSegments0.0100.00.00.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value300000.0400000.0400000.0300000.0300000.0300000.0
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value300000.0400000.0300000.0300000.0300000.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0

us-gaap:OtherNonoperatingIncome

us-gaap:OtherNonoperatingIncome


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
Value763000.01011000.0874000.0707000.02263000.0619000.0780000.0399000.0509000.0357000.0289000.0430000.0167000.0715000.0641000.0389000.0668000.0503000.0378000.0173000.09000.046000.045000.0628000.031000.04000.0-31761.034000.0-51000.073000.0
Percentage of OtherNonoperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromProductiveAssets

us-gaap:PaymentsForProceedsFromProductiveAssets


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
Value143000.0417000.0193000.0218000.0112000.0211000.080000.028000.0214000.0153000.016000.0179000.0152000.0171000.0151000.0213000.0173000.0185000.0225000.0475000.0228000.0189000.0-828000.0289000.0241000.0298000.0151450.0218000.0253000.062000.0
Percentage of PaymentsForProceedsFromProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:PaymentsToAcquireEquityMethodInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.01.1250.01.0590.00.00.0150.00.00.0-2.3e-050.00.270.658
Percentage of PaymentsToAcquireEquityMethodInvestments0.0100.00.0100.00.00.00.0100.00.00.00.0100.00.0100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.9370.8330.9210.7010.6150.6490.6330.6120.7450.76.0815.5460.5734.930.2919.353163.4866.8252.7680.00.0
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:ProceedsFromNotesPayable

us-gaap:ProceedsFromNotesPayable


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
Value4.89112812910034457541710.01102020352550233235607.5816314196645158.7809788.6782827
Percentage of ProceedsFromNotesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductWarrantyAccrualPayments

us-gaap:ProductWarrantyAccrualPayments


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
Value1204000.01170000.01410000.01452000.0829000.01045000.01415000.01190000.0495000.0838000.01360000.01840000.0647000.0302000.0680000.0723000.0897000.0509000.0-314000.0556000.0554000.0387000.0469000.0279000.059000.0102000.0238730.0282000.039000.054000.0
Percentage of ProductWarrantyAccrualPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductWarrantyAccrualWarrantiesIssued

us-gaap:ProductWarrantyAccrualWarrantiesIssued


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
Value1404000.01420000.01710000.01602000.0879000.01095000.01515000.01240000.0695000.0988000.01810000.01990000.0847000.0352000.0855000.0773000.0947000.0509000.0-89000.0656000.0654000.0387000.0494000.0329000.0184000.0172000.0288730.0357000.039000.079000.0
Percentage of ProductWarrantyAccrualWarrantiesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfNotesPayable

us-gaap:RepaymentsOfNotesPayable


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
Value1607518915452350346251510.00.0150.05.03.020170.00.081540.58400.5010.6591.7150.6797823.9862225
Percentage of RepaymentsOfNotesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SellingExpense

us-gaap:SellingExpense


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
Value29323733332629272922282624161817171413141311109.2399.1867.3626.6865753.5893.2452.248
Percentage of SellingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

us-gaap:PerformanceShares


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
Value00007460.00006717.0000000009066.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod0.00.00.00.0100.00.00.00.0100.00.00.00.00.00.00.00.00.0100.0

us-gaap:RestrictedStockUnitsRSU


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
Value418.0982.02918.06092.04615.02026.01284.0948.02382.02611.0317.02800.06013.0406.0805.04868.001731.01025.01492.01802.0150.0528.01328.01478.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod0.00.00.00.061.90.00.00.035.50.00.00.00.00.00.00.00.019.10.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


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
Value2.6251.030.520.52-1.9248.610.460.5219.0414.750.39-0.19-4.4324.710.71.03016.24-0.121.463.5111.00011.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.00.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


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
Value1.2759.813.230.490.5156.49-5.7-0.76-0.5464.64.450.420.3231.641.40.080.421.782.120.180.4114.69-0.740.020.0417.2
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:AwardDate, us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

lgih:TwoThousandSeventeen, us-gaap:PerformanceShares


None
Period End2020-06-302020-03-31
Value0104770.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod0.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:AwardType

us-gaap:PerformanceShares


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
Value0104770.000083656.0000120970.000059980.00000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod0.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


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
Value2160.051531.012407.0137.02421.040265.015208.0518.04947.031021.013480.01054.0550.010719.019705.0009305.015980.0269.0059438.0116540.0000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod0.049.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:Range, us-gaap:AwardDate, us-gaap:AwardType

srt:Maximum, lgih:TwoThousandSixteen, us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-09-30
Value0208870.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod0.0199.40.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


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
Value0.231.954.20.050.421.825.090.19-15.1730.682.820.310.1515.17-0.050014.78-1.080017.211.0000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.00.0100.0100.00.00.00.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage


None
Period End2020-06-302020-03-312019-09-30
Value01.00
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.00.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:AwardDate, us-gaap:AwardType

lgih:TwoThousandEighteen, us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.110.890.120.1601.00-0.39-0.021.41
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.089.00.00.00.00.00.00.00.00.0

lgih:TwoThousandNineteenMemberDomain, us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value01.00.060
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.00.00.0

lgih:TwoThousandSeventeen, us-gaap:PerformanceShares


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
Value0.151.130.14-0.110.961.000.210.121.670.54001.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0113.00.00.00.00.00.00.00.00.00.00.00.00.0

lgih:TwoThousandSixteen, us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-152019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value01.9900.042.01.960002.0000.311.690.4470
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0199.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:Range, us-gaap:AwardType

srt:Maximum, us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value02.00002.00
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0200.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value14705.0282060.010073.014153.0218340.013416.017845.0282890.0
Percentage of StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value940000.0833000.0704000.0615000.0649000.0633000.0612000.0745000.0700000.0557000.0412000.0406000.0267000.0405000.0341000.0024000.072000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value939000.0831000.0704000.0614000.0647000.0633000.0612000.0745000.0697000.0556000.0412000.0406000.0266000.0405000.0341000.0024000.072000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures99.999.8100.099.899.7100.0100.0100.099.699.8100.0100.099.6100.0100.00.0100.0100.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-31
Value1000.02000.001000.02000.00003000.01000.0001000.00
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures0.10.20.00.20.30.00.00.00.40.20.00.00.40.0

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:TreasuryStock


None
Period End2020-03-31
Value-31335000.0
Percentage of StockRepurchasedDuringPeriodValue100.0

us-gaap:TreasuryStockSharesAcquired

us-gaap:TreasuryStockSharesAcquired


None
Period End2020-06-302020-03-31
Value0567030.0
Percentage of TreasuryStockSharesAcquired0.0100.0

lgih:CommitmentUnderLandPurchaseOptionAndDepositAgreement

lgih:CommitmentUnderLandPurchaseOptionAndDepositAgreement


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value4365605395507456737767786655964604063292432342512472041551541301058612515813711133
Percentage of CommitmentUnderLandPurchaseOptionAndDepositAgreement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

lgih:InventoryRelatedObligations

lgih:InventoryRelatedObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value6.697.2157.8086.3775.6487.2457.0419.71411131214161616171717171311117.2756.4710.0
Percentage of InventoryRelatedObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

lgih:LettersofCreditSuretyBondsandOtherFinancialGuarantees

lgih:LettersofCreditSuretyBondsandOtherFinancialGuarantees


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1201181081009178775660524945323429262620
Percentage of LettersofCreditSuretyBondsandOtherFinancialGuarantees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

lgih:LineofCreditFacilityAdditionalBorrowingCapacity us-gaap:DebtInstrument

lgih:LineofCreditFacilityAdditionalBorrowingCapacity

us-gaap:RevolvingCreditFacility


None
Period End2020-03-312019-12-312019-03-31
Value10010050
Percentage of LineofCreditFacilityAdditionalBorrowingCapacity100.0100.0100.0

lgih:LineofCreditFacilityAdditionalBorrowingCapacity us-gaap:DebtInstrument, us-gaap:SubsequentEventType

lgih:SecondAmendment, us-gaap:SubsequentEvent


None
Period End2020-04-30
Value100
Percentage of LineofCreditFacilityAdditionalBorrowingCapacity0.0

lgih:LineofcreditfacilityMaximumBorrowingCapacitybeforeAccordion us-gaap:DebtInstrument

lgih:LineofcreditfacilityMaximumBorrowingCapacitybeforeAccordion

lgih:SecondAmendment


None
Period End2020-04-30
Value650
Percentage of LineofcreditfacilityMaximumBorrowingCapacitybeforeAccordion100.0

us-gaap:RevolvingCreditFacility


None
Period End2020-03-312019-12-312019-12-062019-05-062018-12-31
Value550550650550450
Percentage of LineofcreditfacilityMaximumBorrowingCapacitybeforeAccordion0.00.00.00.00.0

lgih:LineofcreditfacilityMaximumBorrowingCapacitybeforeAccordion us-gaap:DebtInstrument, us-gaap:SubsequentEventType

lgih:SecondAmendment, us-gaap:SubsequentEvent


None
Period End2020-04-30
Value650
Percentage of LineofcreditfacilityMaximumBorrowingCapacitybeforeAccordion100.0

lgih:LotsUnderPurchaseOptionsRecorded

lgih:LotsUnderPurchaseOptionsRecorded


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value12519.018855.016205.017044.023215.020722.022820.026836.022296.022063.018758.016312.012540.08437.08462.011088.09972.07722.06318.06729.05780.04987.03921.08538.010127.08776.08214.02242.0
Percentage of LotsUnderPurchaseOptionsRecorded100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

lgih:LotsUnderPurchaseOptionsRecorded us-gaap:StatementGeographical, us-gaap:RelatedPartyTransactionsByRelatedParty

stpr:FL, srt:AffiliatedEntity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value110.0198.0198.0198.0198.0198.0198.0198.0
Percentage of LotsUnderPurchaseOptionsRecorded0.91.11.21.20.91.00.90.7

lgih:RefundableLandDepositsOfPurchaseContractsofFinishedLots

lgih:RefundableLandDepositsOfPurchaseContractsofFinishedLots


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value202526283027252212118.42.90.3
Percentage of RefundableLandDepositsOfPurchaseContractsofFinishedLots100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsPayableCurrentAndNoncurrent

us-gaap:AccountsPayableCurrentAndNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value1519122922149.24117192512261919121821202428241715151913143.09089
Percentage of AccountsPayableCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value584556454331423131214432341717151513171514127.3659.7139.2255.5415.4018510.922897
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedIncomeTaxes

us-gaap:AccruedIncomeTaxes


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value3519287.8036.40312104.1073.9178.7124829129.1315.0420106.6696.205125.5241.4451.4481.1871.6273.2161.5536830.119473
Percentage of AccruedIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesAndOtherLiabilities

us-gaap:AccruedLiabilitiesAndOtherLiabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value114951177873687675565410286634746624742404431252117117.6447.1002182.176945
Percentage of AccruedLiabilitiesAndOtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentUnamortizedDiscount us-gaap:DebtInstrument

us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:SeniorNotes


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1600000.01700000.01758000.01841000.01926000.02012000.02100000.02192000.00
Percentage of DebtInstrumentUnamortizedDiscount100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredFinanceCostsNet us-gaap:DebtInstrument

us-gaap:DeferredFinanceCostsNet

us-gaap:RevolvingCreditFacility


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value6000000.04500000.05027000.04583000.05026000.03449000.03669000.04051000.07696000.04724000.02747000.05848000.06394000.02626000.02747000.02800000.03000000.01500000.0
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SeniorNotes


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2000000.02100000.02214000.02297000.02381000.02464000.02548000.02619000.00
Percentage of DeferredFinanceCostsNet33.346.744.050.147.471.469.464.70.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


None
Period End2020-06-302020-03-312019-12-31
Value3687000.02301000.04621000.0
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0

us-gaap:EarnestMoneyDeposits

us-gaap:EarnestMoneyDeposits


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value30373740454345402924181413111011129.2627.0017.8797.9367.079.8781213143.7032930.997875
Percentage of EarnestMoneyDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrentAndNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrentAndNoncurrent


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
Value12121614108.78313129.7718.55914128.8724.727.87.5055.2874.2745.5735.8213.2842.5372.4342.693
Percentage of EmployeeRelatedLiabilitiesCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:PerformanceShares


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
Value8500000.09300000.05700000.06600000.07600000.09000000.05300000.06400000.08000000.09100000.04800000.04600000.05400000.06300000.03300000.03300000.03900000.04400000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


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
Value5200000.05900000.04300000.04100000.04800000.05400000.03600000.03600000.04100000.04500000.02900000.02700000.03000000.03200000.01700000.01600000.01800000.02000000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions61.263.475.462.163.260.067.956.251.249.560.458.755.650.851.548.546.245.5

us-gaap:InterestPayableCurrentAndNoncurrent

us-gaap:InterestPayableCurrentAndNoncurrent


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
Value105.789117.039127.266127.6072.6473.3382.0963.0181.9882.6811.6452.3891.472.2921.249
Percentage of InterestPayableCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryFinishedHomes

us-gaap:InventoryFinishedHomes


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value25129332525022228932127624725121417112312913194799193584048605842302810
Percentage of InventoryFinishedHomes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryHomesUnderConstruction

us-gaap:InventoryHomesUnderConstruction


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value23324323437129719714924221222619123922815294146138122109111955750344541278.045848
Percentage of InventoryHomesUnderConstruction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryOperativeBuilders

us-gaap:InventoryOperativeBuilders


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value145814811499148013281290122811871062104091890283578871767660956153146040738736729122017714128
Percentage of InventoryOperativeBuilders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryOperativeBuildersOther

us-gaap:InventoryOperativeBuildersOther


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value29272626252321211919181717151311109.5978.0838.1668.56313128.117.3394.2663.7842950.912461
Percentage of InventoryOperativeBuildersOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRealEstateLandAndLandDevelopmentCosts

us-gaap:InventoryRealEstateLandAndLandDevelopmentCosts


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value944916912831783780736647582542494473466490477424381336320282262267244190125101828.538631
Percentage of InventoryRealEstateLandAndLandDevelopmentCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LandUnderPurchaseOptionsRecorded

us-gaap:LandUnderPurchaseOptionsRecorded


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value28343537423940382723171312109.95410118.9646.4067.5097.5076.8269.5911112132.977050.9635
Percentage of LandUnderPurchaseOptionsRecorded100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:DebtInstrument

us-gaap:LettersOfCreditOutstandingAmount

lgih:SecondAmendment


None
Period End2020-04-30
Value520
Percentage of LettersOfCreditOutstandingAmount100.0

us-gaap:RevolvingCreditFacility


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value181511139.26.96.96.76.37.07.67.63.4
Percentage of LettersOfCreditOutstandingAmount0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:DebtInstrument, us-gaap:SubsequentEventType

lgih:SecondAmendment, us-gaap:SubsequentEvent


None
Period End2020-04-30
Value520
Percentage of LettersOfCreditOutstandingAmount100.0

us-gaap:LongTermDebtPercentageBearingVariableInterestRate us-gaap:DebtInstrument, us-gaap:SubsequentEventType, us-gaap:VariableRate

us-gaap:LongTermDebtPercentageBearingVariableInterestRate

lgih:SecondAmendment, us-gaap:SubsequentEvent, us-gaap:LondonInterbankOfferedRateLIBOR


None
Period End2020-04-30
Value0.007
Percentage of LongTermDebtPercentageBearingVariableInterestRate100.0

us-gaap:LongTermDebtPercentageBearingVariableInterestRate us-gaap:DebtInstrument, us-gaap:VariableRate

lgih:SecondAmendment, us-gaap:LondonInterbankOfferedRateLIBOR


None
Period End2020-04-30
Value0.007
Percentage of LongTermDebtPercentageBearingVariableInterestRate100.0

us-gaap:RevolvingCreditFacility, us-gaap:LondonInterbankOfferedRateLIBOR


None
Period End2020-06-302020-03-31
Value0.00180.0092
Percentage of LongTermDebtPercentageBearingVariableInterestRate0.00.0

us-gaap:NotesPayable

us-gaap:NotesPayable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value587744690751664676653627554571475464442426400354334323308247239229216
Percentage of NotesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NotesPayable us-gaap:DebtInstrument

us-gaap:RevolvingCreditFacility


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value291448394385299311290264487505394384363347322277257246230170162152139
Percentage of NotesPayable49.660.257.151.345.146.144.442.287.988.483.182.882.181.580.578.176.976.374.668.667.766.564.5

us-gaap:SeniorNotes


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2962962962952952952952950.0
Percentage of NotesPayable50.439.842.939.444.543.745.247.00.0

us-gaap:NotesPayableFairValueDisclosure us-gaap:DebtInstrument

us-gaap:NotesPayableFairValueDisclosure

us-gaap:SeniorNotes


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3222633373333213052962970.0
Percentage of NotesPayableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5545000.05439000.05645000.05360000.05317000.05290000.00
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.00.0

us-gaap:OtherAssets

us-gaap:OtherAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value22201616151915111117149.4526.4534.5435.6314.6036.0057.27814119.1876.2577.5154.733.8292.6741.9646311.8841
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherLiabilities

us-gaap:OtherLiabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value8.357141710107.091015108.55510107.9335.6584.9125.585.8654.1835.0537.8096.4825.0314.4164.4032.2531.6721.894
Percentage of OtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductWarrantyAccrual

us-gaap:ProductWarrantyAccrual


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value3950000.03750000.03500000.03200000.03050000.03000000.02950000.02850000.02800000.02600000.02450000.02000000.01850000.01650000.01600000.01425000.01375000.01325000.01325000.01100000.01000000.0900000.0900000.0875000.0825000.0700000.0630000.0550000.0475000.0475000.0450000.0275000.0
Percentage of ProductWarrantyAccrual100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PurchaseOptionsLand us-gaap:StatementGeographical, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:PurchaseOptionsLand

stpr:FL, srt:AffiliatedEntity


None
Period End2020-06-302020-03-312019-12-312018-12-312018-09-30
Value4000000.06900000.06900000.06900000.06900000.0
Percentage of PurchaseOptionsLand100.0100.0100.0100.0100.0

us-gaap:RetentionPayable

us-gaap:RetentionPayable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value3127262319171823169.4891213146.9998.5067.7514.6915.7423.0362.3391.3911.6782.6962.2920.867
Percentage of RetentionPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardDate, us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

lgih:TwoThousandEighteen, us-gaap:PerformanceShares


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
Value60040.060040.060040.060040.060040.083367.061898.061898.061898.061898.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

lgih:TwoThousandNineteenMemberDomain, us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value81242.081242.081242.081242.081242.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber135.3135.3135.3135.3135.30.0

lgih:TwoThousandSeventeen, us-gaap:PerformanceShares


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
Value00104770.0104770.0104770.061898.0108250.0108250.0108250.0111040.0111040.0111040.0111040.0111040.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber0.00.0174.5174.5174.574.2174.9174.9174.9179.40.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value229820.0229820.0246050.0246050.0246050.0253510.0253820.0253820.0253820.0260540.0319610.0319610.0319610.0319610.0268560.0268560.0268560.0268560.0190020.0190020.0190020.0190020.062906.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber382.8382.8409.8409.8409.8304.1410.1410.1410.1420.90.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value156360.0156870.0162690.0165340.0170560.0176010.0171060.0173520.0172680.0176520.0175100.0180420.0182030.0184710.0133850.0141330.0145920.0143160.0107810.0105940.0106830.0101920.0102790.0201840.0202120.0201620.0140220.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber260.4261.3271.0275.4284.1211.1276.3280.3279.0285.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardDate, us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

lgih:TwoThousandEighteen, us-gaap:PerformanceShares


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value64.664.664.664.664.656.4964.664.664.664.6
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

lgih:TwoThousandSeventeen, us-gaap:PerformanceShares


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
Value31.6431.6431.6431.6431.6464.631.6431.6431.6431.6431.6431.6431.6431.64
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue49.049.049.049.049.0114.449.049.049.049.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value60.4259.7150.8448.3548.1247.5939.0438.3438.1437.2227.6625.0624.724.2720.1318.5818.5118.3116.4814.3114.2613.9815.4313.012.9612.8911.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue93.592.478.774.874.584.260.459.359.057.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockShares

us-gaap:TreasuryStockShares


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value1606000.01606000.01039000.01039000.01039000.01039000.01039000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.00
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Line plots across dimensions of each concept


us-gaap:Revenues
us-gaap:StatementBusinessSegments
(None,)
None
us-gaap:Revenues
us-gaap:ProductOrService
(None,)
None
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType
(None,)
None
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:StatementBusinessSegments
(None,)
None
EBT Margin
us-gaap:StatementBusinessSegments
(None,)
None
us-gaap:Assets
us-gaap:StatementBusinessSegments
(None,)
None
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
None