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Loans and Allowance for Loan and Lease Losses (Narrative) (Details)
12 Months Ended
Dec. 31, 2021
USD ($)
Loan
contract
Dec. 31, 2020
USD ($)
Loan
contract
Borrower
Dec. 31, 2019
USD ($)
contract
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable deferred fees and costs $ 6,264,000 $ 9,084,000  
Loans and leases receivable, impaired, interest lost on nonaccrual loans 177,000 638,000 $ 333,000
Loans and leases receivable, impaired, commitment to lend   0  
Financing receivable, modifications, recorded investment $ 819,000 $ 1,480,000  
Number of troubled debt restructured loans | Loan 0 0  
Loan modifications to number of borrowers affected by Covid | Borrower   1,000  
Loans and leases receivable, gross, carrying amount $ 3,104,396,000 $ 2,384,041,000 1,762,756,000
Loans to certain executive officers, directors, and their related interests 15,725,000 12,567,000  
Loans to certain executive officers, directors, and their related interests, new loans and advances 5,240,000    
Loans to certain executive officers, directors, and their related interests, Repayments 2,082,000    
CARES Act [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans and leases receivable, gross, carrying amount $ 3,571,000 $ 11,681,000  
CARES Act [Member] | Maximum [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Qualifying deferment status percentage of loan portfolio 1.00% 1.00%  
Entity Loan Modification Program [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable, modifications, recorded investment   $ 582,000 $ 43,000
Number of troubled debt restructured loans | contract 0 3 2
Nonaccruing [Member] | Nine Loans With Sven Relationships [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable, modifications, recorded investment $ 384,000 $ 1,017,000  
Residential Mortgage [Member] | Residential Portfolio [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable, modifications, recorded investment 472,000 510,000  
Loans and leases receivable, gross, carrying amount 323,223,000 201,841,000 $ 236,724,000
Residential Mortgage [Member] | Residential Portfolio [Member] | Entity Loan Modification Program [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable, modifications, recorded investment   $ 47,000  
Number of troubled debt restructured loans | contract   2  
Residential Mortgage [Member] | Residential Portfolio [Member] | Accruing | Three Unrelated Borrowers [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable, modifications, recorded investment 435,000 $ 463,000  
Residential Mortgage [Member] | Residential Portfolio [Member] | Nonaccruing [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable, modifications, recorded investment 37,000    
Residential Mortgage [Member] | Residential Portfolio [Member] | Nonaccruing [Member] | Nine Loans With Sven Relationships [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable, modifications, recorded investment   1,017,000  
Residential Mortgage [Member] | Residential Portfolio [Member] | Nonaccruing [Member] | One Large Relationships [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable, modifications, recorded investment   $ 535,000  
Residential Mortgage [Member] | Commercial Real Estate [Member] | Residential Portfolio [Member] | Nonaccruing [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable, modifications, recorded investment 320,000    
Residential Mortgage [Member] | Commercial Real Estate - Construction [Member] | Residential Portfolio [Member] | Nonaccruing [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable, modifications, recorded investment 22,000    
Residential Mortgage [Member] | Commercial and Industrial [Member] | Residential Portfolio [Member] | Nonaccruing [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Financing receivable, modifications, recorded investment $ 5,000