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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Guarantee commitment $ 2,975    
Probable loan loss experience on unfunded obligations [Member]      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Estimate of possible loss   $ 150 $ 250
Commitments to extend credit      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Commitments to extend credit 332,875   326,179
Undisbursed lines of credit      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Commitments to extend credit $ 322,441   314,774
Undisbursed lines of credit | Minimum      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Commitments to extend credit, term of agreement 1 month    
Undisbursed lines of credit | Maximum      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Commitments to extend credit, term of agreement 12 months    
Undisbursed portions of construction loans      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Commitments to extend credit $ 90,269   79,669
Standby letters of credit and financial guarantees      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Commitments to extend credit $ 10,434   $ 11,405
Standby letters of credit and financial guarantees | Maximum      
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]      
Commitments to extend credit, term of agreement 1 year