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Property, Plant and Equipment (Details) (USD $)
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3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2013
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Dec. 31, 2012
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Mar. 31, 2013
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| Property, Plant and Equipment | |||||
| Depreciation expense | $ 400,000 | $ 600,000 | $ 1,400,000 | $ 1,800,000 | |
| Property, Plant and Equipment | |||||
| Total property, plant and equipment, gross | 36,204,000 | 36,204,000 | 35,290,000 | ||
| Less accumulated depreciation | (33,109,000) | (33,109,000) | (31,747,000) | ||
| Total property, plant and equipment, net | 3,095,000 | 3,095,000 | 3,543,000 | ||
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Machinery, rental equipment, equipment, automobiles and furniture
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| Property, Plant and Equipment | |||||
| Total property, plant and equipment, gross | 21,365,000 | 21,365,000 | 20,649,000 | ||
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Leasehold improvements
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| Property, Plant and Equipment | |||||
| Total property, plant and equipment, gross | 9,728,000 | 9,728,000 | 9,708,000 | ||
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Molds and tooling
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| Property, Plant and Equipment | |||||
| Total property, plant and equipment, gross | $ 5,111,000 | $ 5,111,000 | $ 4,933,000 | ||