Consolidated Balance Sheet Detail - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016
Property Plant And Equipment [Line Items]
Total property and equipment	$ 67,979	$ 63,295
Less: accumulated depreciation	(8,158)	(6,180)
Total property and equipment, net	59,821	57,115
Land [Member]
Property Plant And Equipment [Line Items]
Total property and equipment	1,379	1,480
Plant and Machinery [Member]
Property Plant And Equipment [Line Items]
Total property and equipment	44,160	42,375
Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Total property and equipment	$ 22,440	$ 19,440