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INVENTORIES - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Mar. 31, 2016
Inventory Disclosure [Abstract]    
Raw materials $ 19,468 $ 18,617
Work in process 1,489 651
Finished goods 31,903 38,761
Total inventories $ 52,860 $ 58,029