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Employee Benefits - Salary continuation plans (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Appreciation in cash surrender value of bank owned life insurance $ 985 $ 840 $ 711
Salary Continuation [Member] | Certain Key Executives [Member]      
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Salary continuation plans, expense for period (430) 377 1,624
Total liability 9,554 10,881  
Cash surrender value of life insurance 29,622 28,916  
Appreciation in cash surrender value of bank owned life insurance $ 706 $ 576 $ 466
Minimum | Salary Continuation [Member] | Certain Key Executives [Member]      
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Contractual term 10 years    
Maximum | Salary Continuation [Member] | Certain Key Executives [Member]      
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Contractual term 15 years