Annual report pursuant to Section 13 and 15(d)

Property and Equipment - Additional Information (Detail)

v3.8.0.1
Property and Equipment - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
General and administrative | Internal use assets      
Property Plant And Equipment [Line Items]      
Depreciation expense $ 931 $ 867  
Other direct costs of revenue | Internally developed software to be sold      
Property Plant And Equipment [Line Items]      
Depreciation expense 313 8  
O&O      
Property Plant And Equipment [Line Items]      
Depreciation expense $ 1,244 $ 875 $ 396