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Commitments and Contingent Liabilities (Details) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Loss Contingencies [Line Items]    
Carrying value of commitment $ 909,000 $ 872,000
Commitments to extend credit    
Loss Contingencies [Line Items]    
Amount of commitment 235,000,000 213,900,000
Standby letters of Credit    
Loss Contingencies [Line Items]    
Amount of commitment $ 13,200,000 $ 13,300,000