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Goodwill and Other Intangible Assets (Details Textuals) (USD $)
3 Months Ended 8 Months Ended 9 Months Ended
Aug. 31, 2011
Aug. 31, 2010
Aug. 31, 2010
Aug. 31, 2011
Nov. 30, 2010
Goodwill and Other Intangible Assets (Textuals) [Abstract]          
Contractual dollar limit of additional consideration $ 754,000     $ 754,000  
Impairment of goodwill       0  
Fees related to mortgage servicing rights 1,000,000 900,000 2,600,000 2,900,000  
Fair value of mortgage servicing rights 15,800,000     15,800,000 16,100,000
Aggregate amortization expense $ 400,000 $ 200,000 $ 500,000 $ 800,000