Annual report pursuant to Section 13 and 15(d)

Accounts Receivable - Additional Information (Detail)

v3.7.0.1
Accounts Receivable - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Receivables [Abstract]      
Accounts receivable write-offs $ 495 $ 132 $ 505