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Related Party Transactions - Loans to Executive Officers, Directors, and Their Affiliates (Details) - Executive Officers, Directors, and their Affiliates - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Notes Receivable, Related Parties [Roll Forward]    
Balance, beginning of year $ 1,392 $ 1,093
Advances 907 1,092
Principal repayments (1,544) (793)
Effect of changes in composition of related parties (284) 0
Balance, end of year 471 1,392
Commitments to extend credit $ 833 $ 2,702