Revenue Recognition - Schedule of Categorizes Revenue by Major Geographical Location (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Total Revenue [Line Items]
Total revenue	$ 204,974	$ 181,778	$ 412,640	$ 361,788
U.S.
Total Revenue [Line Items]
Total revenue	172,015	158,243	347,500	315,838
International
Total Revenue [Line Items]
Total revenue	$ 32,959	$ 23,535	$ 65,140	$ 45,950