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Fair Value Disclosures (Level 4 loan UPB vs FV) (Details 1) - USD ($)
$ in Thousands
Jan. 31, 2017
Oct. 31, 2016
Aggregate unpaid principal and fair value of mortgage loans held for sale    
Mortgage Loans on Real Estate, Commercial and Consumer, Net $ 85,765 $ 248,601
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Assets Held-for-sale [Member] | Residential Mortgage [Member]    
Aggregate unpaid principal and fair value of mortgage loans held for sale    
Aggregate unpaid principal balance 86,122 246,794
Mortgage Loans on Real Estate, Commercial and Consumer, Net 85,765 248,601
Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables $ (357) $ 1,807