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Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Statement of Comprehensive Income [Abstract]
Net loss	$ (169,417)	$ (65,386)	$ (26,411)
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on investments	309	(492)	0
Reclassification of unrealized gains (losses) on investments	0	0	(1,219)
Other comprehensive income (loss), net of tax	309	(492)	(1,219)
Comprehensive loss	$ (169,108)	$ (65,878)	$ (27,630)

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