Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (68,163)	$ (22,938)	$ (130,797)	$ (49,576)
Other comprehensive income (loss):
Foreign currency translation adjustments	100	(57)	290	304
Total comprehensive loss	$ (68,063)	$ (22,995)	$ (130,507)	$ (49,272)