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Financial Instruments with Off-Balance-Sheet Risk (Schedule of Financial Instruments) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]    
Commitments to extend credit $ 21,886 $ 27,558
Unfunded commitments under lines of credit 171,406 146,202
Commercial and standby letters of credit $ 10,397 $ 8,139