OTHER FINANCIAL INFORMATION (Schedule of Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	May 31, 2016	May 31, 2015
Interest expense on convertible senior unsecured notes:
Stated interest at 1.625% per annum	$ 701	$ 181
Amortization of note discount	1,507	383
Amortization of debt issue costs	192	48
Interest expense on convertible notes	2,400	612
Other interest expense	24	36
Total interest expense	$ 2,424	$ 648
Convertible Senior Notes [Member]
Condensed Income Statements, Captions [Line Items]
Interest rate (as a percent)	1.625%