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Consolidated Balance Sheet Detail - Summary of Inventory (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Mar. 31, 2016
Inventory Disclosure [Abstract]    
Raw materials $ 8,243 $ 8,693
Work in progress 3,729 2,266
Finished goods 1,196 1,625
Total inventories $ 13,168 $ 12,584