STOCK-BASED COMPENSATION (Schedule of Stock-based Compensation Expense) (Details) (USD $)	3 Months Ended		6 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Stock-based compensation expense	$ 936,000	$ 690,000	$ 1,756,000	$ 1,321,000
Cost of revenues [Member]
Stock-based compensation expense	58,000	42,000	110,000	81,000
Research and development [Member]
Stock-based compensation expense	148,000	122,000	283,000	232,000
Selling [Member]
Stock-based compensation expense	126,000	87,000	239,000	158,000
General and administrative [Member]
Stock-based compensation expense	$ 604,000	$ 439,000	$ 1,124,000	$ 850,000