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Inventory - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Inventory Disclosure [Abstract]        
Inventory write-down $ 1,000 $ 100 $ 1,835 $ 1,401