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Borrowings - Schedule of Available Unused Lines of Credit (Details) - Unused lines of Credit [Member] - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Correspondent Banks [Member]    
Short Term Debt [Line Items]    
Collateral Requirements None  
Available lines of credit $ 45.0 $ 44.8
Federal Reserve (Discount Window) [Member]    
Short Term Debt [Line Items]    
Collateral Requirements Subject to collateral  
Available lines of credit $ 1.0 1.6
FHLB Advances [Member]    
Short Term Debt [Line Items]    
Collateral Requirements Subject to collateral  
Available lines of credit $ 237.0 $ 225.8