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Short-Term And Long-Term Borrowings (Narrative) (Details) - USD ($)
6 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Line of Credit Facility [Line Items]    
Maximum borrowing capacity $ 702,500,000  
Short-term advances with FHLB outstanding 0 $ 0
Long-term advances FHLB 14,651,000 14,700,000
PPPLF borrowings   50,794,000
PPPLF Borrowings [Member]    
Line of Credit Facility [Line Items]    
PPPLF borrowings $ 0 $ 50,800,000
Interest rate   0.35%
Maximum [Member]    
Line of Credit Facility [Line Items]    
Federal Home Loan Bank advance period 60 months  
Federal Home Loan Bank Advances [Member]    
Line of Credit Facility [Line Items]    
Line of credit, maximum borrowing capacity $ 150,000,000.0  
Atlantic Community Bankers Bank (ACBB) [Member    
Line of Credit Facility [Line Items]    
Line of credit, maximum borrowing capacity 10,000,000.0 $ 10,000,000.0
Line of credit outstanding $ 0 $ 0