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. 29, 2020	$ 137,919	$ 220,825	$ (81,531)	$ (1,375)
Stock-based compensation expense		6,469
Shares issued on net share settlement of equity awards		(1,485)
Exercise of stock options and contributions to ESPP		909
Net loss	(23,900)		(23,900)
Foreign currency translation adjustment				(800)
Balances at Aug. 31, 2020	118,978	226,718	(105,565)	(2,175)
Balances (ASC 326 [Member]) at Aug. 31, 2020			(134)
Balances at May. 31, 2020	125,194	224,391	(96,087)	(3,110)
Stock-based compensation expense		2,846
Shares issued on net share settlement of equity awards		(1,405)
Exercise of stock options and contributions to ESPP		886
Net loss	(9,478)		(9,478)
Foreign currency translation adjustment				935
Balances at Aug. 31, 2020	118,978	226,718	(105,565)	(2,175)
Balances (ASC 326 [Member]) at Aug. 31, 2020			(134)
Balances at Feb. 28, 2021	95,085	234,044	(137,974)	(985)
Stock-based compensation expense		5,434
Shares issued on net share settlement of equity awards		(4,017)
Exercise of stock options and contributions to ESPP		900
Net loss	(7,373)		(7,373)
Foreign currency translation adjustment				283
Balances at Aug. 31, 2021	90,312	236,361	(145,347)	(702)
Balances at May. 31, 2021	95,727	235,728	(139,922)	(79)
Stock-based compensation expense		2,937
Shares issued on net share settlement of equity awards		(2,956)
Exercise of stock options and contributions to ESPP		652
Net loss	(5,425)		(5,425)
Foreign currency translation adjustment				(623)
Balances at Aug. 31, 2021	$ 90,312	$ 236,361	$ (145,347)	$ (702)