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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 310,616	$ 1,236	$ 168,096
Other comprehensive (loss) income:
Foreign currency translation	(5,254)	11,378	(1,403)
Change in unrealized (losses) gains on marketable securities, net of tax	(2,456)	(494)	502
Total other comprehensive (loss) income	(7,710)	10,884	(901)
Comprehensive income	$ 302,906	$ 12,120	$ 167,195

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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