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Borrowed Funds (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Short-term Debt [Line Items]    
Carrying value of securities sold under agreements to repurchase $ 68,773 $ 31,020
Additional borrowing capacity $ 214,625  
Federal Funds Purchased [Member] | Minimum [Member]    
Short-term Debt [Line Items]    
Debt instrument, term 1 day  
Federal Funds Purchased [Member] | Maximum [Member]    
Short-term Debt [Line Items]    
Debt instrument, term 4 days  
Federal Reserve Bank Advances [Member] | Minimum [Member]    
Short-term Debt [Line Items]    
Debt instrument, term   1 day
Federal Reserve Bank Advances [Member] | Maximum [Member]    
Short-term Debt [Line Items]    
Debt instrument, term   4 days