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Stock-Based Compensation
6 Months Ended
Jul. 31, 2011
Stock-Based Compensation [Abstract]  
Stock-Based Compensation
12. Stock-Based Compensation
     Total compensation expense recognized for stock-based awards granted under the Company’s various equity incentive plans during the three and six months ended July 31, 2011 was approximately $721,000 and $937,000, respectively, and, during the three and six months ended July 31, 2010 was approximately $497,000 and $770,000, respectively. Additionally, during the three months ended July 31, 2011, accrued compensation expense applicable to the year ended January 31, 2011 totaling approximately $302,000 was paid by issuing fully vested common stock and options to purchase common stock. During the three months ended July 31, 2011, options to purchase 70,000 shares of common stock were granted to non-employee members of the Company’s Board of Directors.