STOCKHOLDERS' EQUITY (Restricted Stock Shares and RSUs Activity) (Details) (Restricted Stock Units (Rsus) [Member], USD $)	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 28, 2012
Number of Shares and RSUs
Outstanding	1,338,000		2,045,000
Granted	312,000	440,000	762,000
Vested	(592,000)	(916,000)	(819,000)
Forfeited	(34,000)	(115,000)	(59,000)
Outstanding	1,024,000	1,338,000	1,929,000
Weighted Average Grant Date Fair Value
Outstanding	$ 4.40		$ 2.16
Granted	$ 15.58	$ 7.50	$ 3.59
Vested	$ 3.83	$ 2.53	$ 2.21
Forfeited	$ 7.88	$ 2.85	$ 1.99
Outstanding	$ 8.02	$ 4.40	$ 2.71
Net share settlement of options exercised	203,383	308,998	279,764
2004 Plan [Member]
Weighted Average Grant Date Fair Value
Award units available for grant	649,160
Maximum number of units granted to non-employee directors	20,000