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Fair Value of Assets and Liabilities - Additional Information (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Allowance for Credit Losses $ 4,053,000      
Other real estate owned 7,238,000   $ 2,489,000  
Mortgage servicing rights (MSR) impairment (recovery) 269,000      
Mortgage Servicing Rights        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Finite-lived intangible assets, net 473,000 $ 900,000 516,000 $ 1,444,000
Mortgage servicing rights (MSR) impairment (recovery) (318,000) $ 259,000 $ 273,000  
Fair Value, Nonrecurring        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Unpaid Principal Balance 15,955,000      
Recorded Balance 3,468,000      
Allowance for Credit Losses 12,487,000      
Fair Value, Nonrecurring | Mortgage Servicing Rights        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Indefinite-lived contractual rights 742,000      
Finite-lived intangible assets, net 473,000      
Fair Value, Nonrecurring | Carrying Amount        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Other real estate owned 7,238,000      
Fair Value, Nonrecurring | Fair Value        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Other real estate owned $ 3,303,000