Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 198,839	$ (10,655)	$ 177,868	$ (125,488)
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available-for-sale marketable securities, net	831	(313)	573	(342)
Foreign currency translation adjustments. net	2,112	1,132	32,007	441
Other comprehensive income, net	2,943	819	32,580	99
Comprehensive income (loss)	$ 201,782	$ (9,836)	$ 210,448	$ (125,389)