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Loans (Narrative) (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Apr. 01, 2019
Jul. 01, 2018
Financing Receivable, Credit Quality Indicator [Line Items]            
Business Combination, Acquired Receivables, Gross Contractual Amount         $ 589,700,000 $ 277,900,000
Loans and Leases Receivable, Deferred Income $ 18,100,000   $ 19,500,000      
Troubled Debt Restructuring Included In Nonaccrual Loans 16,200,000   20,900,000      
TDRs included in accruing loan totals 32,400,000   28,300,000      
Nonaccrual Trouble Debt Restructuring Current 6,100,000   10,500,000      
Commitments to lend additional funds to borrowers whose terms had been modified in a TDR 3,200,000   3,000,000      
Specific reserves related to troubled debt restructuring 200,000   300,000      
Additional Specific Reserves Related To Troubled Debt Restructuring 0          
Loan Modifications on Nonacrrual status $ 600,000 $ 1,700,000        
Loan past due period before entering default status 30 days          
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period $ 1,000,000 1,000,000        
Deposit Liabilities Reclassified as Loans Receivable 2,100,000   1,100,000      
PPP loans originated [Line Items] 37,400,000          
SBA Fees received       $ 20,200,000    
SBA PPP Fees recognized 1,500,000 4,600,000        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables         578,600,000 272,800,000
Goodwill, Purchase Accounting Adjustments 3,800,000   4,200,000      
Troubled Debt Restructuring, Classification removed 171,000 3,900,000        
Cumulative Effect, Period of Adoption, Adjustment            
Financing Receivable, Credit Quality Indicator [Line Items]            
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase   52,000        
PPP Round 2            
Financing Receivable, Credit Quality Indicator [Line Items]            
SBA Fees received     12,900,000      
PPP loans receivable [Member]            
Financing Receivable, Credit Quality Indicator [Line Items]            
Loans and Leases Receivable, Deferred Income 1,400,000   2,800,000      
Accruing [Member]            
Financing Receivable, Credit Quality Indicator [Line Items]            
Loans modified during period 4,000 300,000        
Nonaccrual [Member]            
Financing Receivable, Credit Quality Indicator [Line Items]            
Loans modified during period 1,000,000 700,000        
Consumer [Member]            
Financing Receivable, Credit Quality Indicator [Line Items]            
Financing Receivable, Modifications, Recorded Investment, During Period 12,000,000 $ 9,800,000        
Financial Asset Acquired with Credit Deterioration [Member]            
Financing Receivable, Credit Quality Indicator [Line Items]            
Business Combination, Acquired Receivable, Fair Value $ 7,000,000   $ 7,100,000   18,400,000 4,900,000
Business Combination, Acquired Receivables, Gross Contractual Amount         $ 19,900,000 $ 5,100,000