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Inventory - Schedule of Inventory (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Mar. 31, 2015
Inventory Disclosure [Abstract]    
Raw materials $ 9,665 $ 9,411
Work-in-process 3,411 2,117
Finished goods 3,215 7,487
Deferred program costs 2,221 1,581
Net inventory $ 18,512 $ 20,596