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Investments in Foreclosed Real Estate and Distressed Loans Investments in Foreclosed Real Estate and Distressed Loans (Details 3) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 31, 2015
Jul. 31, 2014
Jul. 31, 2015
Jul. 31, 2014
Real Estate Properties [Line Items]        
Gains (losses) upon acquisition of REO $ 0 $ 2,980 $ 230 $ 4,503