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Property, Plant and Equipment (Details) (USD $)
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3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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Mar. 31, 2013
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| Property, Plant and Equipment | |||||
| Depreciation expense | $ 500,000 | $ 600,000 | $ 1,000,000 | $ 1,200,000 | |
| Property, Plant and Equipment | |||||
| Total property, plant and equipment, gross | 35,890,000 | 35,890,000 | 35,290,000 | ||
| Less accumulated depreciation | (32,713,000) | (32,713,000) | (31,747,000) | ||
| Total property, plant and equipment, net | 3,177,000 | 3,177,000 | 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 | 21,140,000 | 21,140,000 | 20,649,000 | ||
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Leasehold improvements
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| Property, Plant and Equipment | |||||
| Total property, plant and equipment, gross | 9,717,000 | 9,717,000 | 9,708,000 | ||
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Molds and tooling
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| Property, Plant and Equipment | |||||
| Total property, plant and equipment, gross | $ 5,033,000 | $ 5,033,000 | $ 4,933,000 | ||