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DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS - Inventory, net (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Mar. 31, 2016
Inventory, Net [Abstract]    
Raw materials $ 23,858 $ 21,612
Work in process 345 527
Finished goods 28,483 31,023
Inventory, net $ 52,686 $ 53,162