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Bank Premises and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Line Items]      
Bank premises and equipment, gross $ 25,681 $ 25,361  
Less accumulated depreciation and amortization (17,694) (16,981)  
Bank premises and equipment, net 7,987 8,380  
Depreciation and amortization 755 897 $ 881
Land      
Property, Plant and Equipment [Line Items]      
Bank premises and equipment, gross 1,131 1,131  
Buildings and improvements      
Property, Plant and Equipment [Line Items]      
Bank premises and equipment, gross 8,360 8,219  
Furniture, fixtures and equipment      
Property, Plant and Equipment [Line Items]      
Bank premises and equipment, gross 11,885 11,721  
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Bank premises and equipment, gross $ 4,305 $ 4,290