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Fair Value Disclosures (Level 4 loan UPB vs FV) (Details 1) - USD ($)
$ in Thousands
Jan. 31, 2021
Oct. 31, 2020
Aggregate unpaid principal and fair value of mortgage loans held for sale    
Mortgage Loans on Real Estate, Commercial and Consumer, Net $ 125,475 $ 231,797
Fair Value, 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 122,879 225,826
Mortgage Loans on Real Estate, Commercial and Consumer, Net 125,475 231,797
Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables $ 2,596 $ 5,971