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Borrowings, Other Borrowings (Details)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2021
USD ($)
Note
Sep. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument [Abstract]      
Advances from Federal Home Loan Banks $ 91,070   $ 110,500
Weighted average interest rate 1.91%   1.94%
Weighted average contractual maturity 26 months   27 months
FHLB advances, collateral real estate loans $ 176,500    
Junior subordinated debentures 0   $ 3,315
Payment of principal amount 3,315 $ 765  
Notes payable $ 14,000   $ 0
Number of notes payables | Note 2    
Note A [Member]      
Debt Instrument [Abstract]      
Debt instrument, maturity date Dec. 01, 2040    
Notes payable $ 9,900    
Interest rate 5.20%    
Note B [Member]      
Debt Instrument [Abstract]      
Debt instrument, maturity date Dec. 01, 2040    
Notes payable $ 4,100    
Interest rate 0.24%