Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment (Details)

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Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Mar. 31, 2017
Property, Plant and Equipment      
Total property, plant and equipment, gross $ 28,376   $ 30,393
Less accumulated depreciation (26,369)   (28,278)
Total property, plant and equipment, net 2,007   2,115
Depreciation expense 200 $ 300  
Machinery, rental equipment, equipment, automobiles and furniture      
Property, Plant and Equipment      
Total property, plant and equipment, gross 15,698   17,657
Leasehold improvements      
Property, Plant and Equipment      
Total property, plant and equipment, gross 9,822   9,870
Molds and tooling      
Property, Plant and Equipment      
Total property, plant and equipment, gross $ 2,856   $ 2,866