Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2024	Apr. 30, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (70,105)	$ (106,869)
Other comprehensive income (loss):
Change in unrealized gains (losses) on investments	(1,243)	754
Total comprehensive loss	$ (71,348)	$ (106,115)