CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock and Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]
Balances at Feb. 28, 2019	$ 205,653	$ 208,541	$ (2,227)	$ (661)
Stock-based compensation expense		9,378
Shares issued on net share settlement of equity awards		(1,827)
Exercise of stock options and contributions to ESPP		1,048
Net loss	(23,477)		(23,477)
Foreign currency translation adjustment				(122)
Balances at Nov. 30, 2019	190,653	217,140	(25,704)	(783)
Balances at Aug. 31, 2019	193,296	213,533	(18,289)	(1,948)
Stock-based compensation expense		3,652
Shares issued on net share settlement of equity awards		(98)
Exercise of stock options and contributions to ESPP		53
Net loss	(7,415)		(7,415)
Foreign currency translation adjustment				1,165
Balances at Nov. 30, 2019	190,653	217,140	(25,704)	(783)
Balances at Feb. 29, 2020	137,919	220,825	(81,531)	(1,375)
Stock-based compensation expense		9,499
Shares issued on net share settlement of equity awards		(1,557)
Exercise of stock options and contributions to ESPP		909
Net loss	(47,580)		(47,580)
Foreign currency translation adjustment				262
Balances at Nov. 30, 2020	99,318	229,676	(129,245)	(1,113)
Balances (ASC 326 [Member]) at Nov. 30, 2020			(134)
Balances at Aug. 31, 2020	118,978	226,718	(105,565)	(2,175)
Stock-based compensation expense		3,030
Shares issued on net share settlement of equity awards		(72)
Net loss	(23,680)		(23,680)
Foreign currency translation adjustment				1,062
Balances at Nov. 30, 2020	$ 99,318	$ 229,676	(129,245)	$ (1,113)
Balances (ASC 326 [Member]) at Nov. 30, 2020			$ (134)