Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (69,442)	$ (40,890)	$ (72,092)	$ (106,275)
Other comprehensive income (loss):
Foreign currency translation adjustment	(526)	(22)	(531)	14
Unrealized loss on short-term investments, net of tax	0	0	0	(23)
Other comprehensive (loss) income	(526)	(22)	(531)	(9)
Comprehensive loss	$ (69,968)	$ (40,912)	$ (72,623)	$ (106,284)