CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (54,529)	$ (37,597)	$ (135,122)	$ (91,843)
Other comprehensive income (loss), net of tax:
Unrealized income (loss) on available-for-sale securities	6,989	(5,981)	(2,552)	(5,163)
Foreign currency translation adjustment	(85)	1,105	(1,092)	2,026
Other comprehensive income (loss)	6,904	(4,876)	(3,644)	(3,137)
Total comprehensive loss	$ (47,625)	$ (42,473)	$ (138,766)	$ (94,980)