INCOME TAXES (Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Feb. 28, 2023	Feb. 28, 2022
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 37,772	$ 33,379
Depreciation, amortization and impairments	(3,346)	(5,001)
Research and development credits	24,632	23,484
Stock-based compensation	1,466	1,795
Other tax credits	2,137	2,211
Capitalized research costs	8,741	2,657
ROU asset	(3,032)	(3,122)
Lease liabilities	4,228	4,667
Payroll and employee benefit accruals	2,007	1,906
Allowance for doubtful accounts	377	677
Other accrued liabilities	356	3,365
Convertible debt	1,966	(6,573)
Deferred tax assets convertible debt	7,124	5,399
Other, net	619	2,837
Total deferred tax assets	85,047	67,681
Valuation allowance	(82,014)	(63,732)
Net deferred tax assets	3,033	3,949
Reported as:
Deferred tax assets	3,275	4,165
Deferred tax liabilities	(242)	(216)
Net deferred tax assets	$ 3,033	$ 3,949