CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock and Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balances at Feb. 28, 2019	$ 205,653	$ 208,541	$ (2,227)	$ (661)
Stock-based compensation expense		12,421
Shares issued on net share settlement of equity awards		(2,007)
Exercise of stock options and contributions to ESPP		1,870
Net loss	(79,304)		(79,304)
Foreign currency translation adjustments				(714)
Balances at Feb. 29, 2020	137,919	220,825	(81,531)	(1,375)
Balances (ASC 326 [Member]) at Feb. 29, 2020			(134)
Stock-based compensation expense		12,880
Shares issued on net share settlement of equity awards		(1,628)
Exercise of stock options and contributions to ESPP		1,967
Net loss	(56,309)		(56,309)
Foreign currency translation adjustments				390
Balances at Feb. 28, 2021	95,085	234,044	(137,974)	(985)
Stock-based compensation expense		11,346
Shares issued on net share settlement of equity awards		(4,173)
Exercise of stock options and contributions to ESPP		1,530
Net loss	(27,991)		(27,991)
Foreign currency translation adjustments				(395)
Balances at Feb. 28, 2022	$ 75,402	$ 242,747	$ (165,965)	$ (1,380)