Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (32,159)	$ (39,620)	$ (99,886)	$ (80,463)
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustment	643	761	60	375
Change in unrealized gain (loss) on marketable securities	(26)	(1)	(38)	45
Change in unrealized gain (loss) on cash flow hedges	(203)	608	(973)	(83)
Other comprehensive income (loss)	414	1,368	(951)	337
Comprehensive loss	$ (31,745)	$ (38,252)	$ (100,837)	$ (80,126)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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