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FHLB Advances, Other Borrowings and Junior Subordinated Notes Line of credit type (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Line of Credit Facility [Line Items]    
Debt and Lease Obligation $ 329,429,000 $ 308,977,000
Line of credit commitment fee 13,000 13,000
Line of credit    
Line of Credit Facility [Line Items]    
Debt and Lease Obligation 0 $ 0
Line of credit    
Line of Credit Facility [Line Items]    
Senior line of credit with a third-party financial institution $ 10,500,000  
LIBOR | Line of credit    
Line of Credit Facility [Line Items]    
Debt instrument, basis spread on variable rate 2.75%  
Interest rate floor debt | Line of credit    
Line of Credit Facility [Line Items]    
Fixed rate 3.125%