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FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable (Narrative Disclosures) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Apr. 28, 2020
Sep. 30, 2008
Sep. 26, 2008
Line of Credit Facility [Line Items]          
Fixed rate 10.50%       10.50%
Line of Credit $ 413,527,000 $ 429,229,000      
Line of credit commitment fee 13,000        
Federal Home Loan Bank Advances Outstanding 413,527,000 429,229,000      
Loans pledged as collateral for Federal Home Loan Bank advances and unused available credit $ 1,305,000,000 $ 1,219,000,000      
Borrowed funds, interest rate during period 1.86% 1.91%      
Subordinated Borrowing [Line Items]          
Subordinated Debt $ 23,800,000        
Unamortized Debt Issuance Cost, Subordinated Notes 302,000        
Variable Interest Entity          
Sole ownership of common securities issued by Trust II 315,000        
Junior subordinated notes 10,076,000 $ 10,062,000   $ 10,300,000  
Unamortized Debt Issuance Expense 239,000        
Maturity date August 15, 2029          
Subordinated Borrowing [Line Items]          
Subordinated Debt $ 15,000,000        
Subordinated Borrowing, Interest Rate 5.50%        
Maturity date April 15, 2027          
Subordinated Borrowing [Line Items]          
Subordinated Debt $ 9,100,000        
Subordinated Borrowing, Interest Rate 6.00%        
FHLB advances and other borrowings          
Line of Credit Facility [Line Items]          
Senior line of credit with a third-party financial institution $ 695,600,000        
Line of Credit 368,800,000 394,500,000      
Federal Home Loan Bank line of credit maximum available 695,600,000        
Federal Home Loan Bank unused line remaining 326,800,000        
Federal Home Loan Bank Advances Outstanding $ 368,800,000 $ 394,500,000      
FHLB advances and other borrowings | Minimum          
Line of Credit Facility [Line Items]          
Fixed rate 0.00% 0.00%      
FHLB advances and other borrowings | Maximum          
Line of Credit Facility [Line Items]          
Fixed rate 2.51% 2.75%      
Line of credit          
Line of Credit Facility [Line Items]          
Senior line of credit with a third-party financial institution $ 10,500,000        
Line of Credit 500,000        
Federal Home Loan Bank line of credit maximum available 10,500,000        
Federal Home Loan Bank Advances Outstanding $ 500,000        
Line of credit | LIBOR          
Line of Credit Facility [Line Items]          
Debt instrument, basis spread on variable rate 2.75%        
Line of credit | Interest rate floor debt          
Line of Credit Facility [Line Items]          
Fixed rate 2.85%        
Line of credit | SOFR          
Line of Credit Facility [Line Items]          
Debt instrument, basis spread on variable rate 2.36%        
Other borrowings          
Line of Credit Facility [Line Items]          
Line of Credit $ 10,400,000        
Federal Home Loan Bank Advances Outstanding 10,400,000        
Secured Borrowings          
Line of Credit Facility [Line Items]          
Line of Credit 10,400,000        
Federal Home Loan Bank Advances Outstanding $ 10,400,000        
Federal Reserve PPPLF          
Line of Credit Facility [Line Items]          
Line of Credit     $ 29,600,000    
Federal Home Loan Bank Advances Outstanding     $ 29,600,000    
Borrowed funds, interest rate during period   0.35%      
Trust II          
Line of Credit Facility [Line Items]          
Fixed rate         10.50%
Variable Interest Entity          
Trust preferred securities         $ 10,000,000
Sole ownership of common securities issued by Trust II         $ 315,000