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Loans and Allowance - Narrative (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2022
USD ($)
loan
Mar. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Jan. 01, 2022
USD ($)
Receivables [Abstract]        
Loans held for sale $ 3,938,000   $ 11,187,000  
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans 9,356,241,000   9,241,861,000  
Interest income recognized on non-accrual loans $ 0 $ 0    
Standby letters of credit usual term 2 years      
Off-balance sheet commitments $ 20,500,000   20,500,000  
Cumulative effect of ASC 326 adoption        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Off-balance sheet commitments       $ 20,500,000
Past Due        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans 51,600,000   34,700,000  
Increase in past due loans 16,900,000      
30-59 Days Past Due        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans 28,580,000   15,006,000  
Increase in past due loans     13,600,000  
PPP loans        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans 48,700,000   106,600,000  
Commercial and Industrial and Non-owner-occupied Commercial Real Estate Loans | 30-59 Days Past Due        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans $ 20,100,000      
Number of loans | loan 2      
Commercial Real Estate        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Percentage of troubled debt restructured loans 10000.00% 6400.00%    
Residential        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans $ 1,226,695,000   1,159,127,000  
Mortgage loans with formal foreclosure proceedings 3,900,000 $ 3,300,000    
Residential | 30-59 Days Past Due        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans $ 3,697,000   $ 3,979,000