INCOME TAXES (Reconciliation of Income Tax Benefit (Provision)) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Feb. 29, 2016	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
INCOME TAXES [Abstract]
Income tax provision at U.S. statutory federal rate of 35%		$ (7,819)	$ (8,680)	$ (6,269)
U.S. statutory federal rate		35.00%
State income tax provision, net of federal income tax effect		$ (833)	(867)	(770)
Foreign taxes		(102)	41	209
Valuation allowance reductions (increases)		2,541	250	(865)
Research and development tax credits		1,008	1,556	1,126
Other, net		633	(592)	461
Total income tax provision	$ 2,400	$ (4,572)	$ (8,292)	$ (6,108)