|
Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Mar. 31, 2013
|
|
| Lease Commitments | |||
| Renewal option period | 5 years | ||
| Deferred rent | $ 0.2us-gaap_DeferredRentCredit | $ 0.1us-gaap_DeferredRentCredit | |
| Rent expense | 2.4us-gaap_OperatingLeasesRentExpenseNet | 2.3us-gaap_OperatingLeasesRentExpenseNet | 2.1us-gaap_OperatingLeasesRentExpenseNet |
| Inventory | |||
| Commitments and Contingencies | |||
| Commitment to purchase |
$ 35.2us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted / us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis = cpst_InventoriesExcludingLongTermCommitmentMember |
||
| X | ||||||||||
|
- Definition
Represents the period of renewal options as per the lease agreements for primary office and manufacturing facilities. No definition available.
|
| X | ||||||||||
|
- Definition
The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property by the lessor or lessee, respectively. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|