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Employment and Stock Option Agreements (Details Textual) (2007 Omnibus Equity Compensation Plan)
Oct. 31, 2009
Jan. 31, 2007
2007 Omnibus Equity Compensation Plan
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Common shares authorized for issuance (in shares) 4,200,000 2,100,000