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Investments in Distressed Loans and Foreclosed Real Estate (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Jan. 31, 2014
Jan. 31, 2013
Oct. 31, 2013
Investment in non-performing loan portfolios      
Impaired Financing Receivable, Unpaid Principal Balance $ 36,465   $ 63,381
Discount on acquired loans 17,212   27,007
Investments in distressed loans 19,253   36,374
Activity in accretable yield for investment in non-performing loan portfolios      
Begining balance 6,606 17,196  
Additions 169     
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans (3,183) (2,387)  
Accretions (502) (1,403)  
Ending balance 3,090 13,406  
Schedule of changes in real estate owned [Roll Forward]      
Real Estate Acquired Through Foreclosure 72,972 58,353  
Real Estate Owned Additions 7,165 11,040  
Real Estate Owned, Sales 808 439  
Real Estate Owned, Impairments    15  
Real Estate Held And Used Depreciation (62) (175)  
Real Estate Acquired Through Foreclosure $ 79,267 $ 68,764