Annual report pursuant to Section 13 and 15(d)

Accounts Receivable - Additional Information (Detail)

v3.19.1
Accounts Receivable - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Receivables [Abstract]      
Accounts receivable write-offs $ 300 $ 530 $ 294