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Fair Value of Financial Instruments (Reconciliation of Assets and Liabilities Using Significant Unobservable Inputs (Level 3)) (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Changes in fair value of servicing assets $ 0 $ 0
Fair Value, Measurements, Recurring [Member] | Servicing Assets [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning period 47,295,000 50,779,000
New instruments acquired 1,420,000 456,000
Principal repayments (1,507,000) (767,000)
Changes in fair value of servicing assets 703,000 (1,181,000)
Balance at end of period $ 47,911,000 $ 49,287,000