SWAV


Line plots across dimensions of each concept
Tables

Table of contents



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

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GrossProfit

us-gaap:OperatingExpenses

us-gaap:ResearchAndDevelopmentExpense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:SellingAndMarketingExpense

us-gaap:OperatingIncomeLoss

us-gaap:InterestExpense

us-gaap:InterestPaidNet

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLoss

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:ShortTermInvestments

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:AccountsPayableCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

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:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:ShareBasedCompensation
us-gaap:PlanName

us-gaap:AmortizationOfFinancingCosts

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

swav:IncreaseDecreaseInOperatingLeaseLiabilities

swav:OperatingLeaseRightOfUseAssetAmortization

us-gaap:AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts
us-gaap:DebtInstrument
us-gaap:AmortizationOfDebtDiscountPremium

us-gaap:CapitalExpendituresIncurredButNotYetPaid
us-gaap:DebtInstrument, us-gaap:Range
us-gaap:DebtInstrumentBasisSpreadOnVariableRate1
us-gaap:DebtInstrument, us-gaap:SubsequentEventType, us-gaap:VariableRate, us-gaap:LongtermDebtType, us-gaap:Range
us-gaap:DebtInstrument, us-gaap:VariableRate, us-gaap:Range, us-gaap:LongtermDebtType

us-gaap:DepreciationAndAmortization

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherNonoperatingIncome

us-gaap:ProceedsFromStockOptionsExercised
us-gaap:DebtInstrument, us-gaap:SubsequentEventType, us-gaap:LongtermDebtType
us-gaap:RepaymentsOfDebt

us-gaap:RestrictedStockValueSharesIssuedNetOfTaxWithholdings
us-gaap:StatementEquityComponents

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

swav:AccruedResearchAndDevelopmentCostsCurrent

swav:CashAndCashEquivalentsAndShortTermInvestmentsFairValueDisclosure

swav:CashEquivalentsAndShortTermInvestments

swav:CashEquivalentsAndShortTermInvestmentsGrossUnrealizedGainsBeforeTax

swav:CashEquivalentsAndShortTermInvestmentsGrossUnrealizedLossesBeforeTax

swav:ConsignedInventoryNetOfReserves
us-gaap:StatementGeographical, us-gaap:StatementScenario
swav:LettersOfCreditSecuredByRestrictedCash

us-gaap:AccruedProfessionalFeesCurrent

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByAssetClass
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByAssetClass
us-gaap:InvestmentType
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:InvestmentType
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:InvestmentType
us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:InvestmentType
us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:CashAndCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
us-gaap:CashAndCashEquivalents
us-gaap:CashEquivalentsAtCarryingValue

us-gaap:DebtInstrumentFaceAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:SubsequentEventType, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:Range, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:DebtInstrument, us-gaap:SubsequentEventType, us-gaap:LongtermDebtType, us-gaap:Range

us-gaap:DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:LongTermNotesPayable

us-gaap:RestrictedCash
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:MeasurementInputType
us-gaap:WarrantsAndRightsOutstandingMeasurementInput

Tables

  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:CommonStockValue ██▇▇▇▇▁0.0340.0320.0310.0280.0280.0280.002NANANA
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock██▇▇▇▇▁▁▁▁33.94555731.82760631.44678728.25589328.02370727.8708911.8248521.8105031.7975211.770454
us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted █▁32.15647631.644041NA28.08582128.0028879.364755NA1.7762491.7454991.705144
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount NA3.667943NANANA4055.176NANANA20995.547
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOptionNA2.945534NANANA3960.505NANANA3121.53
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:RestrictedStockUnitsRSUNA0.722409NANANA0.005328NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▆██▆▅▄▃▂▁▁10.28615.19714.31211.33310.0127.2695.0623.62.2791.322
us-gaap:CostOfGoodsAndServicesSold ▅██▆▆▄▅▃▂▁3.5925.6515.5534.4014.1333.0723.3041.9731.1790.794
us-gaap:GrossProfit ▁█6.6949.546NANA5.8794.197NANANANA
us-gaap:OperatingExpenses ▁█24.70528.525NANA17.13216.356NANANANA
us-gaap:ResearchAndDevelopmentExpense ▄█▆▄▃▃▂▁▁▁8.10111.8910.0758.3686.9267.4846.1195.5335.535.516
us-gaap:GeneralAndAdministrativeExpense ▇█▅▄▄▃▂▁▁▁5.3986.2244.453.4373.2453.0011.8421.3691.3921.376
us-gaap:SellingAndMarketingExpense █▇▇▅▄▃▂▂▂▁11.20610.4119.5978.1926.9615.8714.9254.8014.3723.438
us-gaap:OperatingIncomeLoss ▂▁▄▆▇▆▇███-18.011-18.979-15.363-13.065-11.253-12.159-11.128-10.076-10.194-9.802
us-gaap:InterestExpense █▇▅▇▇▇▅▄▂▁0.3060.2770.1980.2510.250.2450.1850.1580.040.018
us-gaap:InterestPaidNet █▆▆██▇▅▃▁▂0.1480.1080.1140.1440.1440.1320.0880.050.00.018
us-gaap:AllocatedShareBasedCompensationExpense █▆▄▄▃▁▁▁▁▁2.451.8711.311.1060.8180.4120.4230.2890.3170.273
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▂▁▄▅▇▆▇███-18.097-18.752-14.734-12.931-10.59-12.792-11.212-10.172-10.086-9.594
us-gaap:IncomeTaxExpenseBenefit ▆▇▃█▅▁▃▁▆0.0210.0230.0110.0260.0180.0070.0110.0060.021NA
us-gaap:ProfitLoss ▂▁▄▅▇▆▇███-18.118-18.775-14.745-12.957-10.608-12.799-11.223-10.178-10.107-9.594
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings█▁-18.118-18.775NA-12.957-10.608-12.799NA-10.178-10.107-9.594
us-gaap:NetIncomeLoss ▂▁▄▅▇▆▇███-18.118-18.775-14.745-12.957-10.608-12.799-11.223-10.178-10.107-9.594
us-gaap:ComprehensiveIncomeNetOfTax ▁▁▄▅▇▆▇███-18.2-18.707-14.767-12.975-10.533-12.799-11.223-10.178-10.107-9.593
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:Assets █▆▆▄▄▄▁287.353220.738231.938137.889146.807157.53953.421NANANA
us-gaap:Liabilities ██▇▃▂▃▁41.9342.96639.28529.63927.39428.35323.203NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▅▅▁▁287.353220.738231.938137.889146.807NA53.421NANANA
us-gaap:StockholdersEquity █▇▇▅▆▆▁▁▁▂245.423177.772192.653108.25119.413129.186-122.588-111.832-101.986-92.271
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:AssetsCurrent █▆▆▄▄▄▁264.314197.606216.697131.075140.623151.52548.736NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue █▄▅▁▁▅▁218.296123.111139.04539.45241.924138.06439.643NANANA
us-gaap:ShortTermInvestments ▁▇█13.10947.27856.304NANANANANANANA
us-gaap:AccountsReceivableNetCurrent ▆█▇▅▄▃▁6.3657.8117.3775.5515.2423.9392.85NANANA
us-gaap:InventoryNet █▅▄▃▂▂▁23.42715.92112.0749.2278.2917.0145.131NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▇█▃▄▃▅▁3.1173.4851.8972.1991.9532.5081.112NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:PropertyPlantAndEquipmentNet ██▃▂▁▁▁13.28713.0844.914.1113.2442.8032.619NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▇██▁▁▂8.138.4958.8252.1552.3982.645NANANANA
us-gaap:OtherAssetsNoncurrent ██▇▁▁1.6221.5531.5060.5480.542NA2.066NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:LiabilitiesCurrent ▅▅█▆▄▄▁17.74118.76324.00819.39115.414.6169.371NANANA
us-gaap:AccountsPayableCurrent ▄▃▅▄▃█▁2.5622.152.792.4862.2163.9671.487NANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▇▄█▂▄▄▁1.5621.1531.7440.8121.0461.0250.576NANANA
us-gaap:AccruedLiabilitiesCurrent ▇█▇▃▂▁▁14.38115.82613.7779.4967.3786.4396.217NANANA
us-gaap:OperatingLeaseLiabilityCurrent █▅▁0.7980.7870.774NANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:LongTermDebt ██▁16.28616.12613.819NANANA15.05NANANA
us-gaap:LongTermDebtNoncurrent ██▁16.28616.1267.152NANANA13.383NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▁▆█7.9038.0778.125NA1.7321.916NANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:StockholdersEquity █▇▇▅▆▆▁▁▁▂245.423177.772192.653108.25119.413129.186-122.588-111.832-101.986-92.271
us-gaap:CommonStockValue ██▇▇▇▇▁0.0340.0320.0310.0280.0280.0280.002NANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▇▇▅▅▅▁460.235374.386370.561271.394269.582268.8224.275NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▁▂▄▅▆▇█-214.867-196.749-177.974-163.229-150.272-139.664-126.865NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁█▂0.0210.1030.035NANANANANANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues 83.382NANANANA100.139NANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▁2.6051.871NA1.1060.8180.412NA0.2890.3120.273
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▁▇██▆███▇-18.166-24.189-12.57-10.604-10.518-14.415-9.814-9.885-10.389-11.377
us-gaap:NetCashProvidedByUsedInInvestingActivities █▆▇▇▁▆▆▆▆▆29.7034.32516.7917.641-83.555-0.42-0.851-0.309-0.5061.492
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▁▇▁▁█▂▁▂▁83.6483.9396.3720.491-2.067113.25619.320.02510.0480.416
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect █▄█▄▁█▅▄▄▄95.185-15.934100.593-2.472-96.1498.4218.655-10.169-0.847-9.469
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▁▇██▆███▇-18.166-24.189-12.57-10.604-10.518-14.415-9.814-9.885-10.389-11.377
us-gaap:NetIncomeLoss ▂▁▄▅▇▆▇███-18.118-18.775-14.745-12.957-10.608-12.799-11.223-10.178-10.107-9.594
us-gaap:ProfitLoss ▂▁▄▅▇▆▇███-18.118-18.775-14.745-12.957-10.608-12.799-11.223-10.178-10.107-9.594
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings█▁-18.118-18.775NA-12.957-10.608-12.799NA-10.178-10.107-9.594
us-gaap:IncreaseDecreaseInAccountsReceivable ▁▅█▅▇▆▅▆▅▅-1.4460.4341.8260.3091.3031.0890.1950.9520.5610.503
us-gaap:IncreaseDecreaseInInventories █▅▄▂▂▃▁▂▂▂7.1583.8072.7280.9361.2771.883-0.0790.5950.9241.168
us-gaap:ShareBasedCompensation █▆▄▄▃▁▁▁▁▁2.3911.8711.311.1060.8180.4120.4230.2890.3120.273
us-gaap:AmortizationOfFinancingCosts █▇▃▃▃▂▂▁0.160.1530.1140.110.1080.1040.0990.09NANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities █▆▇▇▁▆▆▆▆▆29.7034.32516.7917.641-83.555-0.42-0.851-0.309-0.5061.492
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▇█▃▂▂▁▂▁▁▁4.2974.6551.531.0960.7710.420.8510.3090.5060.315
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▁▇▁▁█▂▁▂▁83.6483.9396.3720.491-2.067113.25619.320.02510.0480.416
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value34000.032000.031000.028000.028000.028000.02000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.0

None

us-gaap:SharesOutstanding us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value3331312828271.8248521.8105031.7975211.7704541.6270321.55551
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value323128289.3647551.7762491.7454991.705144
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


None
Period End2020-03-312019-03-312018-03-31
Value3.667943405520995
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EmployeeStockOption


None
Period End2020-03-312019-03-312018-03-31
Value2.94553439603121
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount80.397.714.9

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-03-312019-03-31
Value0.7224090.005328
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount19.70.0

None

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10151411107.2695.0623.62.2791.322
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:DE


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.8250.9111.0130.8730.8730.6430.4350.4390.2670.254
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.06.07.17.78.78.88.612.211.719.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.06.07.17.78.78.88.612.211.719.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:DE100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.5377.7697.6456.2465.1723.6362.5462.0531.5270.897
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.851.153.455.151.750.050.357.067.067.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.851.153.455.151.750.050.357.067.067.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

swav:AllOtherCountries


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.8171.4091.030.7860.6580.2540.1620.1130.0140.042
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.99.37.26.96.63.53.23.10.63.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.99.37.26.96.63.53.23.10.63.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax swav:AllOtherCountries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

swav:RestOfEurope


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.1075.1084.6243.4283.3092.7361.9190.9950.4710.129
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.233.632.330.233.137.637.927.620.79.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.233.632.330.233.137.637.927.620.79.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax swav:RestOfEurope100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.5925.6515.5534.4014.1333.0723.3041.9731.1790.794
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.937.238.838.841.342.365.354.851.760.1

None

us-gaap:GrossProfit

us-gaap:GrossProfit


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value6.6949.5465.8794.197
Percentage of GrossProfit100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.162.858.757.7

None

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value24281716
Percentage of OperatingExpenses100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax240.2187.7171.1225.0

None

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8.10111108.3686.9267.4846.1195.5335.535.516
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax78.878.270.473.869.2103.0120.9153.7242.7417.2

None

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.3986.2244.453.4373.2453.0011.8421.3691.3921.376
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.541.031.130.332.441.336.438.061.1104.1

None

us-gaap:SellingAndMarketingExpense

us-gaap:SellingAndMarketingExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11109.5978.1926.9615.8714.9254.8014.3723.438
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax108.968.567.172.369.580.897.3133.4191.8260.1

None

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-18011000.0-18979000.0-15363000.0-13065000.0-11253000.0-12159000.0-11128000.0-10076000.0-10194000.0-9802000.0
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-175.1-124.9-107.3-115.3-112.4-167.3-219.8-279.9-447.3-741.5

None

us-gaap:InterestExpense

us-gaap:InterestExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value306000.0277000.0198000.0251000.0250000.0245000.0185000.0158000.040000.018000.0
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.01.81.42.22.53.43.74.41.81.4

None

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value148000.0108000.0114000.0144000.0144000.0132000.088000.050000.0018000.0
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.00.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.40.70.81.31.41.81.71.40.01.4

None

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2450000.01871000.01310000.01106000.0818000.0412000.0423000.0289000.0317000.0273000.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.812.39.29.88.25.78.48.013.920.7

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value39000.0161000.0112000.081000.048000.027000.029000.07000.016000.015000.0
Percentage of AllocatedShareBasedCompensationExpense1.68.68.57.35.96.66.92.45.05.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.41.10.80.70.50.40.60.20.71.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CostOfSales0.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value924000.0663000.0462000.0430000.0365000.0205000.0196000.0169000.0175000.0166000.0
Percentage of AllocatedShareBasedCompensationExpense37.735.435.338.944.649.846.358.555.260.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.04.43.23.83.62.83.94.77.712.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value650000.0488000.0361000.0307000.0204000.072000.089000.047000.050000.049000.0
Percentage of AllocatedShareBasedCompensationExpense26.526.127.627.824.917.521.016.315.817.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.33.22.52.72.01.01.81.32.23.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ResearchAndDevelopmentExpense0.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingAndMarketingExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value837000.0559000.0375000.0288000.0201000.0108000.0109000.066000.076000.043000.0
Percentage of AllocatedShareBasedCompensationExpense34.229.928.626.024.626.225.822.824.015.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.13.72.62.52.01.52.21.83.33.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingAndMarketingExpense0.00.00.00.00.00.00.00.00.00.0

None

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-18097000.0-18752000.0-14734000.0-12931000.0-10590000.0-12792000.0-11212000.0-10172000.0-10086000.0-9594000.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-175.9-123.4-102.9-114.1-105.8-176.0-221.5-282.6-442.6-725.7

None

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value21000.023000.011000.026000.018000.07000.011000.06000.021000.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.10.20.20.10.20.20.9

None

us-gaap:ProfitLoss

us-gaap:ProfitLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-18118000.0-18775000.0-14745000.0-12957000.0-10608000.0-12799000.0-11223000.0-10178000.0-10107000.0-9594000.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-176.1-123.5-103.0-114.3-106.0-176.1-221.7-282.7-443.5-725.7

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-18118000.0-18775000.0-12957000.0-10608000.0-12799000.0-10178000.0-10107000.0-9594000.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-176.1-123.5-114.3-106.0-176.1-282.7-443.5-725.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-18118000.0-18775000.0-14745000.0-12957000.0-10608000.0-12799000.0-11223000.0-10178000.0-10107000.0-9594000.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-176.1-123.5-103.0-114.3-106.0-176.1-221.7-282.7-443.5-725.7

None

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-18200000.0-18707000.0-14767000.0-12975000.0-10533000.0-12799000.0-11223000.0-10178000.0-10107000.0-9593000.0
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-176.9-123.1-103.2-114.5-105.2-176.1-221.7-282.7-443.5-725.6

None

us-gaap:Assets

us-gaap:Assets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value28722023113714615753
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:Liabilities

us-gaap:Liabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value41423929272823
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.619.516.921.518.718.043.4

None

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value28722023113714653
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value245177192108119129-122.588-111.832-101.986-92.271-83.292-53.831
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets85.480.583.178.581.382.0-229.50.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302017-12-31
Value0.0210.1030.0350.0570.075-0.001
Percentage of StockholdersEquity0.00.10.00.10.10.0
Percentage of Assets0.00.00.00.00.10.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value4603743702712692684.2753.8083.4763.0842.471.315
Percentage of StockholdersEquity187.5210.6192.3250.7225.8208.1-3.5-3.4-3.4-3.3-3.0-2.4
Percentage of Assets160.2169.6159.8196.8183.6170.68.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value0.0340.0320.0310.0280.0280.0280.0020.0020.0020.0020.0020.002
Percentage of StockholdersEquity0.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value-214.867-196.749-177.974-163.229-150.272-139.664-126.865-115.642-105.464-95.357-85.763-55.148
Percentage of StockholdersEquity-87.5-110.7-92.4-150.8-125.8-108.1103.5103.4103.4103.3103.0102.4
Percentage of Assets-74.8-89.1-76.7-118.4-102.4-88.7-237.50.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value26419721613114015148
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets92.089.593.495.195.896.291.2

None

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value218123139394113839
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets76.055.859.928.628.687.674.2

None

us-gaap:ShortTermInvestments

us-gaap:ShortTermInvestments


None
Period End2020-06-302020-03-312019-12-31
Value134756
Percentage of ShortTermInvestments100.0100.0100.0
Percentage of Assets4.621.424.3

None

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6365000.07811000.07377000.05551000.05242000.03939000.02850000.0
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.23.53.24.03.62.55.3

None

us-gaap:InventoryNet

us-gaap:InventoryNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2315129.2278.2917.0145.131
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.27.25.26.75.64.59.6

None

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3117000.03485000.01897000.02199000.01953000.02508000.01112000.0
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.11.60.81.61.31.62.1

None

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value13134.914.1113.2442.8032.619
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.65.92.13.02.21.84.9

None

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value8130000.08495000.08825000.02155000.02398000.02645000.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0
Percentage of Assets2.83.83.81.61.61.7

None

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1622000.01553000.01506000.0548000.0542000.02066000.0
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.70.60.40.43.9

None

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1718241915149.371
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.28.510.414.110.59.317.5

None

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2562000.02150000.02790000.02486000.02216000.03967000.01487000.0
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.91.01.21.81.52.52.8

None

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1562000.01153000.01744000.0812000.01046000.01025000.0576000.0
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.80.60.70.71.1

None

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1415139.4967.3786.4396.217
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.07.25.96.95.04.111.6

None

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


None
Period End2020-06-302020-03-312019-12-31
Value798000.0787000.0774000.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0
Percentage of Assets0.30.40.3

None

us-gaap:LongTermDebt

us-gaap:LongTermDebt


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value16161315
Percentage of LongTermDebt100.0100.0100.0100.0
Percentage of Assets5.77.36.028.2

None

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value16167.15213
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0
Percentage of Assets5.77.33.125.1

None

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-06-302019-03-31
Value7903000.08077000.08125000.01732000.01916000.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0
Percentage of Assets2.83.73.51.21.2

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value245177192108119129-122.588-111.832-101.986-92.271-83.292-53.831
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets85.480.583.178.581.382.0-229.50.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302017-12-31
Value0.0210.1030.0350.0570.075-0.001
Percentage of StockholdersEquity0.00.10.00.10.10.0
Percentage of Assets0.00.00.00.00.10.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value4603743702712692684.2753.8083.4763.0842.471.315
Percentage of StockholdersEquity187.5210.6192.3250.7225.8208.1-3.5-3.4-3.4-3.3-3.0-2.4
Percentage of Assets160.2169.6159.8196.8183.6170.68.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value0.0340.0320.0310.0280.0280.0280.0020.0020.0020.0020.0020.002
Percentage of StockholdersEquity0.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value-214.867-196.749-177.974-163.229-150.272-139.664-126.865-115.642-105.464-95.357-85.763-55.148
Percentage of StockholdersEquity-87.5-110.7-92.4-150.8-125.8-108.1103.5103.4103.4103.3103.0102.4
Percentage of Assets-74.8-89.1-76.7-118.4-102.4-88.7-237.50.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:CommonStockValue

us-gaap:CommonStockValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value34000.032000.031000.028000.028000.028000.02000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.0

None

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4603743702712692684.275
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets160.2169.6159.8196.8183.6170.68.0

None

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-214870000.0-196750000.0-177970000.0-163230000.0-150270000.0-139660000.0-126860000.0
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-74.8-89.1-76.7-118.4-102.4-88.7-237.5

None

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


None
Period End2020-06-302020-03-312019-12-31
Value21000.0103000.035000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0
Percentage of Assets0.00.00.0

None

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


None
Period End2020-06-302019-03-31
Value83100
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0
Percentage of Assets0.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302019-03-31
Value83100
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0
Percentage of Assets0.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.0

us-gaap:CommonStock


None
Period End2020-06-302019-03-31
Value0.0020.007
Percentage of StockIssuedDuringPeriodValueNewIssues0.00.0
Percentage of Assets0.00.0
Percentage of Assets us-gaap:CommonStock0.00.0

None

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2605000.01871000.01106000.0818000.0412000.0289000.0312000.0273000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2605000.01871000.01106000.0818000.0412000.0289000.0312000.0273000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.0

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-18166000.0-24189000.0-12570000.0-10604000.0-10518000.0-14415000.0-9814000.0-9885000.0-10389000.0-11377000.0
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-176.6-159.2-87.8-93.6-105.1-198.3-193.9-274.6-455.9-860.6

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value294.325167.641-83.555-0.42-0.851-0.309-0.5061.492
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax288.828.5117.367.4-834.5-5.8-16.8-8.6-22.2112.9

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value833.93960.491-2.067113190.025100.416
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax813.225.9673.44.3-20.61558.1381.70.7440.931.5

None

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value95-15.934100-2.472-96.14988.655-10.169-0.847-9.469
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax925.4-104.8702.9-21.8-960.21354.0171.0-282.5-37.2-716.3

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-18166000.0-24189000.0-12570000.0-10604000.0-10518000.0-14415000.0-9814000.0-9885000.0-10389000.0-11377000.0
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-176.6-159.2-87.8-93.6-105.1-198.3-193.9-274.6-455.9-860.6

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-18118000.0-18775000.0-14745000.0-12957000.0-10608000.0-12799000.0-11223000.0-10178000.0-10107000.0-9594000.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-176.1-123.5-103.0-114.3-106.0-176.1-221.7-282.7-443.5-725.7

None

us-gaap:ProfitLoss

us-gaap:ProfitLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-18118000.0-18775000.0-14745000.0-12957000.0-10608000.0-12799000.0-11223000.0-10178000.0-10107000.0-9594000.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-176.1-123.5-103.0-114.3-106.0-176.1-221.7-282.7-443.5-725.7

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-18118000.0-18775000.0-12957000.0-10608000.0-12799000.0-10178000.0-10107000.0-9594000.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-176.1-123.5-114.3-106.0-176.1-282.7-443.5-725.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

None

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1446000.0434000.01826000.0309000.01303000.01089000.0195000.0952000.0561000.0503000.0
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7.1583.8072.7280.9361.2771.883-0.0790.5950.9241.168
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2391000.01871000.01310000.01106000.0818000.0412000.0423000.0289000.0312000.0273000.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensation us-gaap:PlanName

swav:TwoThousandAndNineteenEmployeesStockPurchasePlan


None
Period End2020-06-302020-03-312019-12-312019-09-30
Value207000.0191000.0191000.064000.0
Percentage of ShareBasedCompensation8.710.214.65.8

None

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfFinancingCosts


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value160000.0153000.0114000.0110000.0108000.0104000.099000.090000.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value294.325167.641-83.555-0.42-0.851-0.309-0.5061.492
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax288.828.5117.367.4-834.5-5.8-16.8-8.6-22.2112.9

None

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4297000.04655000.01530000.01096000.0771000.0420000.0851000.0309000.0506000.0315000.0
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value833.93960.491-2.067113190.025100.416
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax813.225.9673.44.3-20.61558.1381.70.7440.931.5

None

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value2798100.02945500.03315000.03658400.03896400.03960500.03636400.03108600.01365900.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value5.425.335.084.954.834.673.542.811.95
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0

swav:IncreaseDecreaseInOperatingLeaseLiabilities

swav:IncreaseDecreaseInOperatingLeaseLiabilities


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value-163000.0-74000.0-259000.0-237000.0
Percentage of IncreaseDecreaseInOperatingLeaseLiabilities100.0100.0100.0100.0

swav:OperatingLeaseRightOfUseAssetAmortization

swav:OperatingLeaseRightOfUseAssetAmortization


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value365000.0369000.0247000.0249000.0
Percentage of OperatingLeaseRightOfUseAssetAmortization100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts

us-gaap:AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts


None
Period End2020-06-302019-06-302019-03-31
Value6.10.21511
Percentage of AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts100.0100.0100.0

us-gaap:AmortizationOfDebtDiscountPremium us-gaap:DebtInstrument

us-gaap:AmortizationOfDebtDiscountPremium

swav:LoanAndSecurityAgreement


None
Period End2020-03-312019-03-31
Value200000.0100000.0
Percentage of AmortizationOfDebtDiscountPremium100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3535000.04036000.0-152000.0111000.0093000.0-125000.0174000.0-68000.074000.0
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

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

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

swav:LoanAndSecurityAgreement, srt:Maximum


None
Period End2020-03-31
Value0.0275
Percentage of DebtInstrumentBasisSpreadOnVariableRate1100.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:DebtInstrument, us-gaap:SubsequentEventType, us-gaap:VariableRate, us-gaap:LongtermDebtType, us-gaap:Range

swav:LoanAndSecurityAgreement, us-gaap:SubsequentEvent, us-gaap:PrimeRate, swav:SupplementalTermLoan, srt:Minimum


None
Period End2020-02-29
Value0.0125
Percentage of DebtInstrumentBasisSpreadOnVariableRate10.0

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

swav:LoanAndSecurityAgreement, us-gaap:PrimeRate, srt:Minimum, swav:SupplementalTermLoan


None
Period End2020-02-29
Value0.0125
Percentage of DebtInstrumentBasisSpreadOnVariableRate10.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value451000.0426000.0483000.0338000.0261000.0255000.0234000.0183000.0154000.0129000.0
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:EarningsPerShareBasicAndDiluted


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.56-0.59-0.48-0.46-0.38-1.37-6.24-5.73-5.79-5.63
Percentage of EarningsPerShareBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value260000.0-542000.0388000.0171000.0344000.0369000.0547000.0-525000.0-8000.0346000.0
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1814000.0-1855000.04170000.02321000.0857000.0991000.01053000.01676000.0722000.0-678000.0
Percentage of IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value69000.047000.0-42000.06000.0-24000.019000.0908000.0-51000.0-83000.0143000.0
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-368000.01588000.0-302000.0246000.0-555000.01396000.01000.062000.092000.0-11000.0
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax


None
Period End2020-06-302020-03-312019-09-302019-06-302018-03-31
Value-82000.068000.0-18000.075000.01000.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


None
Period End2020-06-302020-03-312019-09-302019-06-302018-03-31
Value-82000.068000.0-18000.075000.01000.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax


None
Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-30
Value-82000.0-22000.0-18000.075000.000
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.00.00.0

us-gaap:OtherNonoperatingIncome

us-gaap:OtherNonoperatingIncome


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value220000.0504000.0827000.0385000.0913000.0221000.0100000.0166000.0138000.0185000.0
Percentage of OtherNonoperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value480000.01113000.01183000.0706000.0148000.0169000.026000.025000.060000.0315000.0
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:RepaymentsOfDebt

swav:LoanAndSecurityAgreement, us-gaap:SubsequentEvent, swav:SupplementalTermLoan


None
Period End2020-02-29
Value13
Percentage of RepaymentsOfDebt100.0

us-gaap:RestrictedStockValueSharesIssuedNetOfTaxWithholdings

us-gaap:RestrictedStockValueSharesIssuedNetOfTaxWithholdings


None
Period End2020-06-30
Value616000.0
Percentage of RestrictedStockValueSharesIssuedNetOfTaxWithholdings100.0

us-gaap:RestrictedStockValueSharesIssuedNetOfTaxWithholdings us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-30
Value616000.0
Percentage of RestrictedStockValueSharesIssuedNetOfTaxWithholdings100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value039000.0073000.0
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability0.0100.00.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.4290000.429-0.040
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum100.00.00.00.0100.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.4240000.42400
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum100.00.00.00.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.0260000.0260.0020
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum100.00.00.00.0100.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.02400-0.0010.0250.0060
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum100.00.00.0100.0100.0100.00.0

us-gaap:StockIssuedDuringPeriodSharesNewIssues us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:CommonStock


None
Period End2020-06-302019-03-31
Value1955000.06555000.0
Percentage of StockIssuedDuringPeriodSharesNewIssues100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value137180.0356130.0335930.0232190.073608.080515.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value137180.0356130.0232190.073608.080515.012982.027067.0143420.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0100.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan


None
Period End2020-03-31
Value842000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-03-31
Value842000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value480000.01113000.0706000.0148000.0169000.025000.060000.0215000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value480000.01112000.0706000.0148000.0169000.025000.060000.0215000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.099.9100.0100.0100.0100.0100.0100.0

us-gaap:CommonStock


None
Period End2020-03-31
Value1000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised0.1

swav:AccruedResearchAndDevelopmentCostsCurrent

swav:AccruedResearchAndDevelopmentCostsCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3734000.04100000.03090000.01844000.01247000.01736000.01115000.0
Percentage of AccruedResearchAndDevelopmentCostsCurrent100.0100.0100.0100.0100.0100.0100.0

swav:CashAndCashEquivalentsAndShortTermInvestmentsFairValueDisclosure

swav:CashAndCashEquivalentsAndShortTermInvestmentsFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value1481639721
Percentage of CashAndCashEquivalentsAndShortTermInvestmentsFairValueDisclosure100.0100.0100.0100.0

swav:CashEquivalentsAndShortTermInvestments

swav:CashEquivalentsAndShortTermInvestments


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value1481639721
Percentage of CashEquivalentsAndShortTermInvestments100.0100.0100.0100.0

swav:CashEquivalentsAndShortTermInvestmentsGrossUnrealizedGainsBeforeTax

swav:CashEquivalentsAndShortTermInvestmentsGrossUnrealizedGainsBeforeTax


None
Period End2020-06-302020-03-312019-12-31
Value21000.0107000.036000.0
Percentage of CashEquivalentsAndShortTermInvestmentsGrossUnrealizedGainsBeforeTax100.0100.0100.0

swav:CashEquivalentsAndShortTermInvestmentsGrossUnrealizedLossesBeforeTax

swav:CashEquivalentsAndShortTermInvestmentsGrossUnrealizedLossesBeforeTax


None
Period End2020-03-312019-12-31
Value4000.01000.0
Percentage of CashEquivalentsAndShortTermInvestmentsGrossUnrealizedLossesBeforeTax100.0100.0

swav:ConsignedInventoryNetOfReserves

swav:ConsignedInventoryNetOfReserves


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1757000.01619000.01567000.01757000.0615000.01353000.01100000.0
Percentage of ConsignedInventoryNetOfReserves100.0100.0100.0100.0100.0100.0100.0

swav:LettersOfCreditSecuredByRestrictedCash us-gaap:StatementGeographical, us-gaap:StatementScenario

swav:LettersOfCreditSecuredByRestrictedCash

swav:SantaClara, srt:ScenarioForecast


None
Period End2022-09-01
Value1500000.0
Percentage of LettersOfCreditSecuredByRestrictedCash100.0

us-gaap:AccruedProfessionalFeesCurrent

us-gaap:AccruedProfessionalFeesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1152000.01361000.0804000.0856000.01018000.0713000.01391000.0
Percentage of AccruedProfessionalFeesCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1481639710511211121
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByAssetClass

us-gaap:CommercialPaper


None
Period End2020-03-312019-12-312019-09-302019-06-30
Value106.9588.56216
Percentage of AssetsFairValueDisclosure6.77.18.114.6

us-gaap:CorporateBondSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.0465.0438.0968.0783.018
Percentage of AssetsFairValueDisclosure2.13.18.37.72.7

us-gaap:MoneyMarketFunds


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value13511029192911121
Percentage of AssetsFairValueDisclosure91.268.030.119.026.1100.0100.0

us-gaap:USTreasurySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value1036435863
Percentage of AssetsFairValueDisclosure6.822.244.355.156.6

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value14514772779311121
Percentage of AssetsFairValueDisclosure97.990.274.474.182.7100.0100.0

us-gaap:FairValueInputsLevel2


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.04616252719
Percentage of AssetsFairValueDisclosure2.19.825.625.917.3

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByAssetClass

us-gaap:FairValueInputsLevel1, us-gaap:MoneyMarketFunds


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value13511029192911121
Percentage of AssetsFairValueDisclosure91.268.030.119.026.1100.0100.0

us-gaap:FairValueInputsLevel1, us-gaap:USTreasurySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value1036435863
Percentage of AssetsFairValueDisclosure6.822.244.355.156.6

us-gaap:FairValueInputsLevel2, us-gaap:CommercialPaper


None
Period End2020-03-312019-12-312019-09-302019-06-30
Value106.9588.56216
Percentage of AssetsFairValueDisclosure6.77.18.114.6

us-gaap:FairValueInputsLevel2, us-gaap:CorporateBondSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.0465.0438.0968.0783.018
Percentage of AssetsFairValueDisclosure2.13.18.37.72.7

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:InvestmentType

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:CorporateBondSecurities


None
Period End2020-06-302019-12-312019-09-302019-06-30
Value1000.09000.010000.06000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0

us-gaap:USTreasurySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value20000.0107000.027000.047000.069000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax2000.00.0300.0470.01150.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:InvestmentType

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:CorporateBondSecurities


None
Period End2020-03-31
Value4000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:InvestmentType

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:CommercialPaper


None
Period End2020-03-312019-12-312019-09-302019-06-30
Value106.9588.56216
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0

us-gaap:CorporateBondSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.0455.0478.0878.0683.012
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.046.0116.294.218.4

us-gaap:USTreasurySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value1036435763
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.0329.7621.1676.9388.2

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:CommercialPaper


None
Period End2020-03-312019-12-312019-09-302019-06-30
Value106.9588.56216
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0

us-gaap:CorporateBondSecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.0465.0438.0968.0783.018
Percentage of AvailableForSaleSecuritiesDebtSecurities0.046.0116.494.318.4

us-gaap:USTreasurySecurities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-30
Value1036435863
Percentage of AvailableForSaleSecuritiesDebtSecurities0.0330.7621.5677.5388.6

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashAndCashEquivalentsFairValueDisclosure


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value13511541302911121
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:CashAndCashEquivalents

us-gaap:MoneyMarketFunds


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value13511029192911121
Percentage of CashAndCashEquivalentsFairValueDisclosure100.095.771.065.3100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value21912414039421384031415150
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashEquivalentsAtCarryingValue us-gaap:CashAndCashEquivalents

us-gaap:CashEquivalentsAtCarryingValue

us-gaap:MoneyMarketFunds


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value13511029192911121
Percentage of CashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentFaceAmount

us-gaap:DebtInstrumentFaceAmount


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value16161315
Percentage of DebtInstrumentFaceAmount100.0100.0100.0100.0

us-gaap:DebtInstrumentFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

swav:LoanAndSecurityAgreement, swav:SupplementalTermLoan


None
Period End2020-02-29
Value16
Percentage of DebtInstrumentFaceAmount0.0

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

swav:LoanAndSecurityAgreement, us-gaap:SubsequentEvent, swav:SupplementalTermLoan


None
Period End2020-02-29
Value16
Percentage of DebtInstrumentFaceAmount0.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:DebtInstrument, us-gaap:Range, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateEffectivePercentage

swav:LoanAndSecurityAgreement, srt:Maximum, swav:SupplementalTermLoan


None
Period End2020-02-29
Value0.035
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:DebtInstrument, us-gaap:SubsequentEventType, us-gaap:LongtermDebtType, us-gaap:Range

swav:LoanAndSecurityAgreement, us-gaap:SubsequentEvent, swav:SupplementalTermLoan, srt:Maximum


None
Period End2020-02-29
Value0.035
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0

us-gaap:DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid

us-gaap:DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid


None
Period End2020-06-302020-03-312019-12-31
Value1568000.01568000.01013000.0
Percentage of DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid100.0100.0100.0

us-gaap:DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid us-gaap:DebtInstrument

swav:LoanAndSecurityAgreement


None
Period End2020-06-302020-03-312019-12-312018-02-28
Value1600000.01600000.01000000.01000000.0
Percentage of DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid102.0102.098.70.0

us-gaap:DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid us-gaap:DebtInstrument, us-gaap:SubsequentEventType

swav:LoanAndSecurityAgreement, us-gaap:SubsequentEvent


None
Period End2020-02-29
Value1600000.0
Percentage of DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid0.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet


None
Period End2020-06-302020-03-312019-12-312018-12-31
Value214000.0374000.0-485000.0-50000.0
Percentage of DebtInstrumentUnamortizedDiscountPremiumNet100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7300000.04835000.08139000.05984000.04067000.02965000.03135000.0
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryFinishedGoodsNetOfReserves


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value149.5326.6424.4514.952.6432.313
Percentage of InventoryFinishedGoodsNetOfReserves100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4138000.02726000.02501000.02169000.01978000.01915000.01084000.0
Percentage of InventoryRawMaterialsNetOfReserves100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2682000.02044000.01364000.0850000.0748000.01103000.0634000.0
Percentage of InventoryWorkInProcessNetOfReserves100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermNotesPayable

us-gaap:LongTermNotesPayable


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value16167.1528.705101113
Percentage of LongTermNotesPayable100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCash

us-gaap:RestrictedCash


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1450000.01450000.01450000.0450000.0450000.0450000.0450000.0
Percentage of RestrictedCash100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-31
Value743440.0722410.0280900.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


None
Period End2020-06-302020-03-312019-12-31
Value41.1640.638.12
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant


None
Period End2020-06-302020-03-312019-12-312019-03-312018-12-312017-12-312016-12-31
Value2671200.02660900.01704200.01694100.0392300.0426370.0887880.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant us-gaap:PlanName

swav:TwoThousandAndNineteenEquityIncentivePlan


None
Period End2020-06-30
Value2671200.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant100.0

swav:TwoThousandAndNineteenStockOptionAndIncentivePlan


None
Period End2020-03-312019-03-31
Value2660900.01694100.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value1178212891203114113.6472.011
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WarrantsAndRightsOutstandingMeasurementInput us-gaap:MeasurementInputType

us-gaap:WarrantsAndRightsOutstandingMeasurementInput

us-gaap:MeasurementInputOptionVolatility


None
Period End2020-03-312019-12-312019-03-312018-12-31
Value43.943.943.942.8
Percentage of WarrantsAndRightsOutstandingMeasurementInput100.0100.0100.0100.0

us-gaap:MeasurementInputRiskFreeInterestRate


None
Period End2020-03-312019-12-312019-03-312018-12-31
Value2.52.52.52.9
Percentage of WarrantsAndRightsOutstandingMeasurementInput5.75.75.76.8

Line plots across dimensions of each concept


us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
(None,)
None
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical
(None,)
None
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation
(None,)
None
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents
(None,)
None