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Other Current Liabilities (Details) (Carrier, USD $)
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12 Months Ended | ||
|---|---|---|---|
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Mar. 31, 2015
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Mar. 31, 2014
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Mar. 31, 2013
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Carrier
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| Other Current Liabilities | |||
| Reduction in fixed rate royalty (as a percent) |
50.00%cpst_ResearchAndDevelopmentArrangementPercentageOfReductionInFixedRateAfterRepaymentOfContributionsByOtherParty / dei_LegalEntityAxis = cpst_CarrierCorporationMember |
||
| Royalties earned |
$ 1,600,000us-gaap_RoyaltyExpense / dei_LegalEntityAxis = cpst_CarrierCorporationMember |
$ 2,800,000us-gaap_RoyaltyExpense / dei_LegalEntityAxis = cpst_CarrierCorporationMember |
$ 4,300,000us-gaap_RoyaltyExpense / dei_LegalEntityAxis = cpst_CarrierCorporationMember |
| Unpaid earned royalties |
$ 400,000cpst_RoyaltyPayable / dei_LegalEntityAxis = cpst_CarrierCorporationMember |
$ 600,000cpst_RoyaltyPayable / dei_LegalEntityAxis = cpst_CarrierCorporationMember |
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| X | ||||||||||
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- Definition
Represents the percentage reduction in fixed rate after the repayment of contributions by the other party under the research and development agreement. No definition available.
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| X | ||||||||||
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- Definition
Represents the amount of unpaid royalty fee. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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