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Stock Option Plan and Stock Based Compensation (Details Textual) (USD $)
12 Months Ended
Feb. 28, 2013
Feb. 29, 2012
Feb. 28, 2011
Stock Option Plan and Stock Based Compensation (Additional Textual) [Abstract]      
Unissued common stock reserved 946,754    
Stock option award maximum term 10 years    
Share based compensation arrangements by share based payment award vesting period maximum 5 years    
Unrecognized compensation cost related to unvested stock options granted $ 285,000    
Fair value of shares underlying the options vested 1,100,000    
Remaining unrecognized compensation cost related to unvested restricted stock 1,600,000    
Weighted average remaining requisite service period of the unvested restricted stock awards 1 year 7 months 6 days    
Fair value outstanding restricted stock 3,100,000    
Unvested Stock Options [Member]
     
Stock Option Plan and Stock Based Compensation (Textual) [Abstract]      
Weighted average remaining requisite service period of the unvested stock options 1 year 3 months 18 days    
Selling, General and Administrative Expenses [Member]
     
Stock Option Plan and Stock Based Compensation (Textual) [Abstract]      
Compensation expense related share based compensation before tax 1,459,000 1,025,000 982,000
Compensation expense related share based compensation net of tax $ 934,000 $ 651,000 $ 624,000