Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2024	Apr. 30, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (37,932)	$ (35,902)
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on investments	(389)	110
Other comprehensive income (loss), net of tax	(389)	110
Comprehensive loss	$ (38,321)	$ (35,792)