Property, Plant and Equipment (Details) (USD $)
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3 Months Ended |
9 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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Mar. 31, 2014
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Property, Plant and Equipment |
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Total property, plant and equipment, gross |
$ 34,701,000us-gaap_PropertyPlantAndEquipmentGross
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$ 34,701,000us-gaap_PropertyPlantAndEquipmentGross
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$ 35,534,000us-gaap_PropertyPlantAndEquipmentGross
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Less accumulated depreciation |
(31,539,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
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(31,539,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
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(32,643,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
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Total property, plant and equipment, net |
3,162,000us-gaap_PropertyPlantAndEquipmentNet
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3,162,000us-gaap_PropertyPlantAndEquipmentNet
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2,891,000us-gaap_PropertyPlantAndEquipmentNet
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Depreciation expense |
300,000us-gaap_Depreciation
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400,000us-gaap_Depreciation
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900,000us-gaap_Depreciation
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1,400,000us-gaap_Depreciation
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Machinery, rental equipment, equipment, automobiles and furniture |
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Property, Plant and Equipment |
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Total property, plant and equipment, gross |
20,942,000us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = cpst_MachineryRentalEquipmentEquipmentAutomobileAndFurnitureMember
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20,942,000us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = cpst_MachineryRentalEquipmentEquipmentAutomobileAndFurnitureMember
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20,665,000us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = cpst_MachineryRentalEquipmentEquipmentAutomobileAndFurnitureMember
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Leasehold improvements |
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Property, Plant and Equipment |
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Total property, plant and equipment, gross |
9,760,000us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember
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9,760,000us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember
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9,731,000us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember
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Molds and tooling |
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Property, Plant and Equipment |
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Total property, plant and equipment, gross |
$ 3,999,000us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ToolsDiesAndMoldsMember
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$ 3,999,000us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ToolsDiesAndMoldsMember
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$ 5,138,000us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ToolsDiesAndMoldsMember
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