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		3,623
Shares issued on net share settlement of equity awards		(80)
Exercise of stock options and contributions to ESPP		23
Net loss	(14,422)		(14,422)
Foreign currency translation adjustment				(1,735)
Balances at May. 31, 2020	125,194	224,391	(96,087)	(3,110)
Balances (ASC 326 [Member]) at May. 31, 2020			(134)
Balances at Feb. 28, 2021	95,085	234,044	(137,974)	(985)
Stock-based compensation expense		2,497
Shares issued on net share settlement of equity awards		(1,061)
Exercise of stock options and contributions to ESPP		248
Net loss	(1,948)		(1,948)
Foreign currency translation adjustment				906
Balances at May. 31, 2021	$ 95,727	$ 235,728	$ (139,922)	$ (79)