Commitments and Contingencies - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)	Dec. 31, 2015	Mar. 31, 2015
Liabilities:
Total liabilities measured at fair value	$ 0	$ 31,011,000
Recurring [Member]
Liabilities:
Total liabilities measured at fair value	79,000	31,210,000
Recurring [Member] | Foreign currency forward contracts [Member]
Liabilities:
Total liabilities measured at fair value	79,000	199,000
Recurring [Member] | Fair value of share warrants [Member]
Liabilities:
Total liabilities measured at fair value		31,011,000
Recurring [Member] | Level 1 [Member]
Liabilities:
Total liabilities measured at fair value		31,210,000
Recurring [Member] | Level 1 [Member] | Foreign currency forward contracts [Member]
Liabilities:
Total liabilities measured at fair value		199,000
Recurring [Member] | Level 1 [Member] | Fair value of share warrants [Member]
Liabilities:
Total liabilities measured at fair value		$ 31,011,000
Recurring [Member] | Level 2 [Member]
Liabilities:
Total liabilities measured at fair value	79,000
Recurring [Member] | Level 2 [Member] | Foreign currency forward contracts [Member]
Liabilities:
Total liabilities measured at fair value	$ 79,000