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Nature of Banking Activities and Significant Accounting Policies (Weighted Average Number of Shares Used In Computing Earnings Per Share) (Details) - shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]    
Average number of common shares outstanding 3,440,080 3,417,543
Average number of common shares outstanding used to calculate diluted earnings per share 3,440,080 3,417,543