OTHER FINANCIAL INFORMATION (Schedule of Interest Expense Unaudited Consolidated Income Statements) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2015	Aug. 31, 2014	May. 06, 2015
Condensed Income Statements, Captions [Line Items]
Interest expense on convertible notes	$ 2,227		$ 2,839
Amortization of convertible notes discount			2,019	$ 280
Interest Expense, Other	53	$ 54	89	187
Total interest expense	2,280	$ 54	2,928	$ 187
Convertible notes [Member]
Condensed Income Statements, Captions [Line Items]
Interest expense on convertible notes	$ 701		$ 882
Interest rate (as a percent)	1.625%		1.625%		1.625%
Amortization of convertible notes discount	$ 1,353		$ 1,736
Amortization of debt issue costs	$ 173		$ 221