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Major Customers (Details) (Customer [Member])
3 Months Ended
Feb. 28, 2013
Feb. 29, 2012
Revenues [Member]
   
Major Customers Textual [Abstract]    
Concentration Risk, Percentage 37.00% 23.00%
Accounts Receivable [Member]
   
Major Customers Textual [Abstract]    
Concentration Risk, Percentage 45.00% 29.00%