Schedule of Accumulated Other Comprehensive Income Loss (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Shareholders Equity [Line Items]
Beginning Balance	$ 1,503,326	$ 1,329,675
Ending Balance	1,536,196	1,307,522
Foreign Currency Translation (Losses) Gains
Shareholders Equity [Line Items]
Beginning Balance	(20,562)	(14,718)
Other comprehensive income (loss)	(8,729)	83
Ending Balance	(29,291)	(14,635)
Unrealized Gains (Losses) on Derivative Instruments
Shareholders Equity [Line Items]
Beginning Balance	125	1,904
Other comprehensive income (loss)	(384)	(217)
Ending Balance	(259)	1,687
Net Unrealized Gains (Losses) on Marketable Securities, net of Tax
Shareholders Equity [Line Items]
Beginning Balance	(6,723)	1,369
Other comprehensive income (loss)	(1,998)	(632)
Ending Balance	(8,721)	737
Accumulated Other Comprehensive (Loss)
Shareholders Equity [Line Items]
Beginning Balance	(27,160)	(11,445)
Other comprehensive income (loss)	(11,111)	(766)
Ending Balance	$ (38,271)	$ (12,211)