Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 56,953	$ 62,213	$ 30,428	$ 106,801
Other comprehensive (loss) income:
Foreign currency translation (losses) gains	(2,693)	2,416	(2,610)	3,776
Unrealized gains (losses) on derivative instrument	545	(266)	328	(726)
Net unrealized (losses) gains on marketable securities	(197)	(814)	(829)	940
Other comprehensive (loss) income	(2,345)	1,336	(3,111)	3,990
Comprehensive income	$ 54,608	$ 63,549	$ 27,317	$ 110,791