INCOME TAXES (Reconciliation of Income Tax Benefit (Provision)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Income Tax Disclosure [Abstract]
Income tax benefit (provision) at U.S. statutory federal rate	$ (9,400)	$ 2,864	$ (7,819)
State income tax provision, net of federal income tax effect	(574)	182	(833)
Foreign taxes	2,923	68	(102)
Impact of tax reform	(8,955)
Valuation allowance reductions (increases)	3,046	(1,391)	2,541
Research and development tax credits	1,034	806	1,008
Other, net	1,245	(966)	633
Income tax benefit (provision)	$ (10,681)	$ 1,563	$ (4,572)