INCOME TAXES (Narrative) (Details) - USD ($)	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Operating Loss Carryforwards [Line Items]
Change in valuation allowance deferred tax asset	$ 9,200,000	$ 33,000,000.0
Gross excess tax deductions from share-based payment arrangements			$ 2,900,000
Tax deficiency from share-based payment arrangements	4,100,000	2,400,000
Unrecognized tax benefit from uncertain tax position	1,800,000	2,200,000	3,200,000	$ 1,800,000
Accrued interest and/or penalties		0
Deferred income taxes recognized	0	0
Minimum [Member]
Operating Loss Carryforwards [Line Items]
Income tax benefit attributable to reduction in unrecognized tax benefits	100,000	100,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Change in valuation allowance deferred tax asset	2,100,000	1,600,000
Net operating loss carryforwards	57,100,000
Unexpire operating loss carryforwards	18,600,000
Tax credit carryforwards	1,900,000
Domestic Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	50,400,000
Unrecognized tax benefits, period increase (decrease)	(400,000)	$ (1,000,000.0)	$ (100,000)
Domestic Tax Authority [Member] | Research Tax Credit Carryforward [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	10,400,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	48,400,000
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	$ 8,400,000