Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (271,101)	$ (117,573)	$ (76,567)
Other comprehensive income (loss):
Foreign currency translation adjustments	289	366	(378)
Total comprehensive loss	$ (270,812)	$ (117,207)	$ (76,945)