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Borrowed Funds (Pledged financial instruments) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Debt Disclosure [Abstract]    
Pledged to secure borrowed funds $ 302,041 $ 368,310
Pledged to secure repurchase agreements 68,773 31,020
Pledged for public deposits and for other purposes necessary or required by law 39,641 59,537
Total 410,455 458,867
Short-term Debt [Line Items]    
Pledged Financial Instruments, Available for Sale Securities, without Single Maturity Date 68,773 31,020
State and Local Funds Purchased [Member]    
Short-term Debt [Line Items]    
Pledged Financial Instruments, Available for Sale Securities, without Single Maturity Date 12,728 31,020
Mortgage Backed Securities, Other [Member]    
Short-term Debt [Line Items]    
Pledged Financial Instruments, Available for Sale Securities, without Single Maturity Date 30,250 0
Collateralized Mortgage Obligations [Member]    
Short-term Debt [Line Items]    
Pledged Financial Instruments, Available for Sale Securities, without Single Maturity Date $ 25,795 $ 0