Annual report pursuant to Section 13 and 15(d)

Allowance for Loan and Lease Losses - Summary of Aging Analysis of Recorded Investment for Delinquent Loans by Portfolio and Segment (Details)

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Allowance for Loan and Lease Losses - Summary of Aging Analysis of Recorded Investment for Delinquent Loans by Portfolio and Segment (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Non-accrual $ 5,149 $ 8,597
Recorded investment, Total 2,322,101 2,388,532
Financial Asset Not Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 2,314,796 2,375,988
Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 1,699 3,622
Recorded investment, Non-accrual 139 930
Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 457 325
Recorded investment, Non-accrual 16 545
Financing Receivables, Past Due Greater Than 90 Days or More and Still Accruing    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Non-accrual 3,700 2,200
Commercial and Industrial Loans    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Non-accrual 4,097 4,929
Recorded investment, Total 464,697 574,986
Commercial and Industrial Loans | Financial Asset Not Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 459,659 567,491
Commercial and Industrial Loans | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 573 2,295
Commercial and Industrial Loans | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 368 271
Real Estate | 1-4 Single Family Residential    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Non-accrual 50 1,507
Recorded investment, Total 362,155 364,139
Real Estate | 1-4 Single Family Residential | Financial Asset Not Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 361,667 362,505
Real Estate | 1-4 Single Family Residential | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 420 99
Real Estate | 1-4 Single Family Residential | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 18 28
Real Estate | Construction, Land and Development    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Non-accrual   217
Recorded investment, Total 400,952 415,488
Real Estate | Construction, Land and Development | Financial Asset Not Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 400,205 415,135
Real Estate | Construction, Land and Development | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 679 136
Real Estate | Construction, Land and Development | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 68  
Real Estate | Commercial Real Estate (Including Multifamily)    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Non-accrual 941 1,836
Recorded investment, Total 1,030,891 956,743
Real Estate | Commercial Real Estate (Including Multifamily) | Financial Asset Not Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 1,029,941 953,823
Real Estate | Commercial Real Estate (Including Multifamily) | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 6 1,084
Real Estate | Commercial Real Estate (Including Multifamily) | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 3  
Consumer Loans and Leases    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Non-accrual 48 108
Recorded investment, Total 6,307 11,738
Consumer Loans and Leases | Financial Asset Not Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 6,257 11,618
Consumer Loans and Leases | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 2 8
Consumer Loans and Leases | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current   4
Municipal and Other Loans    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Non-accrual 13  
Recorded investment, Total 57,099 65,438
Municipal and Other Loans | Financial Asset Not Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current 57,067 65,416
Municipal and Other Loans | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current $ 19  
Municipal and Other Loans | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable Recorded Investment Past Due [Line Items]    
Recorded investment, Accruing, Current   $ 22