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Intangible Assets (Details 2) (Solar, 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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Solar
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| Intangible Assets | |||
| Years subject to payment of per-unit royalty fees | 17 years | ||
| Royalties earned |
$ 71,100us-gaap_RoyaltyExpense / dei_LegalEntityAxis = cpst_SolarTurbinesIncorporatedMember |
$ 83,000us-gaap_RoyaltyExpense / dei_LegalEntityAxis = cpst_SolarTurbinesIncorporatedMember |
$ 76,700us-gaap_RoyaltyExpense / dei_LegalEntityAxis = cpst_SolarTurbinesIncorporatedMember |
| Unpaid earned royalties |
$ 19,300cpst_RoyaltyPayable / dei_LegalEntityAxis = cpst_SolarTurbinesIncorporatedMember |
$ 20,700cpst_RoyaltyPayable / dei_LegalEntityAxis = cpst_SolarTurbinesIncorporatedMember |
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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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- Definition
Represents the number of years company is required to pay per-unit royalty fees for cores manufactured and sold using technology previously purchased. 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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