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 (Loss) [Member]
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 employee stock purchase plan		900
Net loss	(7,373)		(7,373)
Foreign currency translation adjustments				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 employee stock purchase plan		652
Net loss	(5,425)		(5,425)
Foreign currency translation adjustments				(623)
Balances at Aug. 31, 2021	90,312	236,361	(145,347)	(702)
Balances at Feb. 28, 2022	75,402	242,747	(165,965)	(1,380)
Balances (ASU 2020-06 [Member]) at Feb. 28, 2022		(67,003)	29,639
Stock-based compensation expense		6,156
Shares issued on net share settlement of equity awards		(1,568)
Exercise of stock options and contributions to employee stock purchase plan		502
Net loss	(19,667)		(19,667)
Foreign currency translation adjustments				(1,641)
Balances at Aug. 31, 2022	21,820	180,834	(155,993)	(3,021)
Balances at May. 31, 2022	28,589	178,279	(148,499)	(1,191)
Stock-based compensation expense		3,196
Shares issued on net share settlement of equity awards		(1,143)
Exercise of stock options and contributions to employee stock purchase plan		502
Net loss	(7,494)		(7,494)
Foreign currency translation adjustments				(1,830)
Balances at Aug. 31, 2022	$ 21,820	$ 180,834	$ (155,993)	$ (3,021)