Consolidated Balance Sheet Detail - Summary of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Payables And Accruals [Abstract]
Accrued legal and professional fees	$ 102	$ 3,758
Accrued interest	225	112
Goods received not invoiced	911	787
Accrued capital expenditure	2,253	972
Accrued development expenditure	3,533	2,110
Other accrued expenses	2,156	1,048
Total accrued expenses and other current liabilities	$ 9,180	$ 8,787