Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (65,386)	$ (26,411)	$ (59,786)
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on investments	(492)		451
Reclassification of unrealized gains (losses) on investments		(1,219)
Other comprehensive income (loss), net of tax	(492)	(1,219)	451
Comprehensive loss	$ (65,878)	$ (27,630)	$ (59,335)