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Property and Equipment (Details Textual) (USD $)
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3 Months Ended | 9 Months Ended | 12 Months Ended | ||
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2012
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Sep. 30, 2011
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Dec. 31, 2011
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| Property and Equipment (Textual) [Abstract] | |||||
| Pump equipment | $ 6,300,000 | $ 7,400,000 | |||
| Depreciation expense included in accumulated depreciation | 2,600,000 | 2,600,000 | 2,200,000 | ||
| Depreciation expense | $ 1,400,000 | $ 1,700,000 | $ 4,343,000 | $ 4,890,000 | |
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- Definition
Accumulated depreciation on pump equipments. No definition available.
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- Details
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- Definition
Pump equipments net. No definition available.
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- Definition
The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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