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Investments in Distressed Loans and Foreclosed Real Estate (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Apr. 30, 2014
Apr. 30, 2013
Oct. 31, 2013
Investments in Non-Performing Loan Portfolios and Foreclosed Real Estate [Abstract]          
Certain Loans Acquired in Transfer Not Accounted for as a Debt Security, Accret Dff, loans acquired during period              
Investment in non-performing loan portfolios          
Impaired Financing Receivable, Unpaid Principal Balance 35,528   35,528   63,381
Discount on acquired loans (16,729)   (16,729)   (27,007)
Investments in distressed loans 18,799   18,799   36,374
Activity in accretable yield for investment in non-performing loan portfolios          
Begining balance 3,090 13,406 6,606 17,196  
Additions 385 471 554 471  
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans (189) (1,528) 3,372 3,915  
Accretions (454) (1,120) (956) (2,523)  
Ending balance 2,832 11,229 2,832 11,229  
Schedule of changes in real estate owned [Roll Forward]          
Real Estate Acquired Through Foreclosure 79,267 68,764 72,972 58,353  
Real Estate Owned Additions 871 3,277 8,036 14,317  
Real Estate Owned, Sales 3,384 472 (4,192) (911)  
Real Estate Owned, Impairments 2    (2) (15)  
Real Estate Held And Used Depreciation (100) (111) (162) (286)  
Real Estate Acquired Through Foreclosure $ 76,652 $ 71,458 $ 76,652 $ 71,458