Stock-Based Compensation (Details 4) (USD $)
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3 Months Ended |
9 Months Ended |
1 Months Ended |
6 Months Ended |
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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May 31, 2014
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Sep. 30, 2014
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Mar. 31, 2014
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Additional disclosure |
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Stock-based compensation expense |
$ 571,000us-gaap_AllocatedShareBasedCompensationExpense
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$ 481,000us-gaap_AllocatedShareBasedCompensationExpense
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$ 1,795,000us-gaap_AllocatedShareBasedCompensationExpense
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$ 1,664,000us-gaap_AllocatedShareBasedCompensationExpense
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Number of preferred stock purchase right for each share of common stock |
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1cpst_PreferredStockNumberOfPurchaseRightsPerShareOfCommonStock
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Preferred stock, par value (in dollars per share) |
$ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
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$ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
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$ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
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Purchase price (in dollars per share) |
$ 10.00cpst_PreferredStockPurchasePricePerShare
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$ 10.00cpst_PreferredStockPurchasePricePerShare
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Period following public announcement of beneficial ownership acquired by various persons resulting in rights becoming exercisable |
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10 days
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Beneficial ownership of common stock (as a percent) |
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20.00%cpst_BeneficialOwnershipOfCommonStockPercentage
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Period following commencement of tender offer or exchange offer that would result in acquisition of beneficial ownership various persons resulting in rights becoming exercisable |
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10 days
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Series A Junior Participating Preferred Stock |
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Additional disclosure |
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Preferred stock conversion basis |
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0.01cpst_PreferredStockConversionRatio / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember
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Restricted stock units |
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Shares |
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Nonvested, balance at the beginning of the period (in shares) |
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2,061,224us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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2,061,224us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Granted (in shares) |
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919,666us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Vested and issued (in shares) |
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(796,575)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Forfeited (in shares) |
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(63,300)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Nonvested, balance at the end of the period (in shares) |
2,121,015us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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2,121,015us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Awards expected to vest (in shares) |
1,948,599cpst_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestOutstandingNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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1,948,599cpst_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestOutstandingNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Weighted Average Grant-Date Fair Value |
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Nonvested restricted stock units outstanding at the beginning of the period (in dollars per share) |
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$ 1.11us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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$ 1.11us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Granted (in dollars per share) |
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$ 1.41us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Vested and issued (in dollars per share) |
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$ 1.13us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Forfeited (in dollars per share) |
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$ 1.25us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Nonvested restricted stock units outstanding at the end of the period (in dollars per share) |
$ 1.23us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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$ 1.23us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Awards expected to vest (in dollars per share) |
$ 1.23cpst_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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$ 1.23cpst_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToVestWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Additional disclosure |
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Total fair value of units vested and issued |
28,200us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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33,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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1,200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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800,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Stock-based compensation expense |
300,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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300,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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900,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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800,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Unrecognized compensation cost |
1,600,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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1,600,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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Weighted average period for recognizing compensation cost |
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2 years 3 months 18 days
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Weighted average grant date fair value of options granted during the period (in dollars per share) |
$ 0.98us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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$ 1.27us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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$ 1.41us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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$ 1.06us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
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PRSU Program |
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Shares |
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Granted (in shares) |
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = cpst_PerformanceRestrictedStockUnitProgramMember
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Additional disclosure |
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Stock-based compensation expense |
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62,800us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = cpst_PerformanceRestrictedStockUnitProgramMember
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25,700us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = cpst_PerformanceRestrictedStockUnitProgramMember
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Unrecognized compensation cost |
$ 200,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions / us-gaap_AwardTypeAxis = cpst_PerformanceRestrictedStockUnitProgramMember
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$ 200,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions / us-gaap_AwardTypeAxis = cpst_PerformanceRestrictedStockUnitProgramMember
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Weighted average period for recognizing compensation cost |
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2 years 3 months 18 days
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Second performance measurement period term |
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3 years
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Number of performance measurement periods |
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2cpst_SharebasedCompensationArrangementBySharebasedPaymentAwardNumberOfPerformanceMeasurementPeriod / us-gaap_AwardTypeAxis = cpst_PerformanceRestrictedStockUnitProgramMember
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Vesting right percentage of awards that will vest after end of applicable performance measurement period |
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50.00%cpst_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentageThatWillVestAfterEndOfPerformanceMeasurementPeriod / us-gaap_AwardTypeAxis = cpst_PerformanceRestrictedStockUnitProgramMember
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Vesting right percentage of awards that will vest one year after end of performance measurement period |
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50.00%cpst_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentageThatWillVestOneYearAfterEndOfPerformanceMeasurementPeriod / us-gaap_AwardTypeAxis = cpst_PerformanceRestrictedStockUnitProgramMember
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Weighted average grant date fair value of options granted during the period (in dollars per share) |
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$ 1.56us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = cpst_PerformanceRestrictedStockUnitProgramMember
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Non-employee director |
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Weighted Average Grant-Date Fair Value |
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Granted (in dollars per share) |
$ 0.81us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember
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$ 1.16us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember
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$ 1.11us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember
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$ 1.18us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember
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Additional disclosure |
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Number of shares issued |
36,259us-gaap_StockIssuedDuringPeriodSharesIssuedForServices / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember
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25,316us-gaap_StockIssuedDuringPeriodSharesIssuedForServices / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember
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79,080us-gaap_StockIssuedDuringPeriodSharesIssuedForServices / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember
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73,478us-gaap_StockIssuedDuringPeriodSharesIssuedForServices / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember
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Chief Executive Officer | PRSU Program |
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Shares |
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Granted (in shares) |
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200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = cpst_PerformanceRestrictedStockUnitProgramMember / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember
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