Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Statement of Comprehensive Income [Abstract]
Net loss	$ (75,865)	$ (117,126)	$ (169,417)
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on investments	806	(50)	309
Other comprehensive income (loss), net of tax	806	(50)	309
Comprehensive loss	$ (75,059)	$ (117,176)	$ (169,108)