Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Mar. 31, 2016
Inventory Disclosure [Abstract]    
Raw materials $ 13,983 $ 13,322
Work in process 1,450 3,065
Finished goods 26,060 25,545
Inventories, gross 41,493 41,932
Valuation reserves (1,434) (1,287)
Inventories, net $ 40,059 $ 40,645