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Fair Value of Financial Instruments (Assets Measured at Fair Value Nonrecurring) (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Nonrecurring Basis    
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities $ 0  
Valuation Allowance for Impairment of Recognized Servicing Assets, Deductions for Aggregate Write-Downs 16,000 $ 161,000
Nonrecurring Basis | Level 3    
Nonrecurring Basis    
Other Real Estate, Foreclosed Assets, and Repossessed Assets 239,000 134,000
Servicing Asset 2,399,000 2,591,000
Nonrecurring Basis | Level 1    
Nonrecurring Basis    
Other Real Estate, Foreclosed Assets, and Repossessed Assets 0 0
Servicing Asset 0 0
Nonrecurring Basis | Level 2    
Nonrecurring Basis    
Other Real Estate, Foreclosed Assets, and Repossessed Assets 0 0
Servicing Asset $ 0 $ 0