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Borrowings (Information for Borrowings Balances, Rates, and Maturities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Standby Letters of Credit [Line Items]    
Federal funds purchased $ 24,437 $ 19,440
FHLB, Total 68,500 59,447
Notes Payable to Banks [Member]    
Standby Letters of Credit [Line Items]    
FHLB, Long-term notes payable 48,500 19,447
Federal Home Loan Bank Advances [Member]    
Standby Letters of Credit [Line Items]    
FHLB, Short-term advances $ 20,000 $ 40,000