v3.26.1
Loans and Allowance for Credit Losses on Loans - Schedule of Loans Outstanding and Aging Analysis (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
loan
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
loan
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
loan
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans $ 2,100,976,000   $ 2,100,976,000   $ 2,120,853,000
Number of loans 90 days past due and still accruing | loan         0
Financing receivable, nonaccrual, earning interest on cash basis 0   0   $ 0
Accrued interest income reversed 1,500 $ 11,000 1,500 $ 44,000  
Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 2,100,976,000   2,100,976,000   2,120,853,000
Non-accrual loans 8,453,000   8,453,000   26,902,000
Non-accrual loans with no allowance 8,365,000   8,365,000   9,741,000
Total past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 10,530,000   10,530,000   11,333,000
30-59 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 1,594,000   1,594,000   1,527,000
60-89 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 410,000   410,000   1,316,000
90 days or more past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 8,526,000   8,526,000   8,490,000
Current | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 2,090,446,000   2,090,446,000   2,109,520,000
Commercial and industrial | Commercial and industrial          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans $ 162,434,000   $ 162,434,000   159,898,000
Number of loans 90 days past due and still accruing | loan 1,000   1,000    
Commercial and industrial | Commercial and industrial | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans $ 162,434,000   $ 162,434,000   159,898,000
Non-accrual loans 5,000   5,000   524,000
Non-accrual loans with no allowance 0   0   0
Commercial and industrial | Commercial and industrial | Total past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 364,000   364,000   161,000
Commercial and industrial | Commercial and industrial | 30-59 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 54,000   54,000   76,000
Commercial and industrial | Commercial and industrial | 60-89 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 13,000   13,000   66,000
Commercial and industrial | Commercial and industrial | 90 days or more past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 297,000   297,000   19,000
Commercial and industrial | Commercial and industrial | Current | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 162,070,000   162,070,000   159,737,000
Commercial real estate loans | Commercial real estate, owner-occupied          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 288,744,000   288,744,000   310,219,000
Commercial real estate loans | Commercial real estate, owner-occupied | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 288,744,000   288,744,000   310,219,000
Non-accrual loans 0   0   314,000
Non-accrual loans with no allowance 0   0   314,000
Commercial real estate loans | Commercial real estate, owner-occupied | Total past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   77,000
Commercial real estate loans | Commercial real estate, owner-occupied | 30-59 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   0
Commercial real estate loans | Commercial real estate, owner-occupied | 60-89 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   0
Commercial real estate loans | Commercial real estate, owner-occupied | 90 days or more past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   77,000
Commercial real estate loans | Commercial real estate, owner-occupied | Current | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 288,744,000   288,744,000   310,142,000
Commercial real estate loans | Commercial real estate, non-owner occupied          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 1,373,990,000   1,373,990,000   1,366,251,000
Commercial real estate loans | Commercial real estate, non-owner occupied | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 1,373,990,000   1,373,990,000   1,366,250,000
Non-accrual loans 8,118,000   8,118,000   25,387,000
Non-accrual loans with no allowance 8,118,000   8,118,000   8,822,000
Commercial real estate loans | Commercial real estate, non-owner occupied | Total past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 8,627,000   8,627,000   9,368,000
Commercial real estate loans | Commercial real estate, non-owner occupied | 30-59 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 509,000   509,000   0
Commercial real estate loans | Commercial real estate, non-owner occupied | 60-89 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   1,250,000
Commercial real estate loans | Commercial real estate, non-owner occupied | 90 days or more past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 8,118,000   8,118,000   8,118,000
Commercial real estate loans | Commercial real estate, non-owner occupied | Current | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 1,365,363,000   1,365,363,000   1,356,882,000
Commercial real estate loans | Construction          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 16,317,000   16,317,000   15,101,000
Commercial real estate loans | Construction | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 16,317,000   16,317,000   15,102,000
Non-accrual loans 0   0   0
Non-accrual loans with no allowance 0   0   0
Commercial real estate loans | Construction | Total past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   0
Commercial real estate loans | Construction | 30-59 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   0
Commercial real estate loans | Construction | 60-89 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   0
Commercial real estate loans | Construction | 90 days or more past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   0
Commercial real estate loans | Construction | Current | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 16,317,000   16,317,000   15,102,000
Residential Portfolio Segment | Home equity          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 101,404,000   101,404,000   99,222,000
Residential Portfolio Segment | Home equity | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 101,404,000   101,404,000   99,222,000
Non-accrual loans 219,000   219,000   401,000
Non-accrual loans with no allowance 219,000   219,000   401,000
Residential Portfolio Segment | Home equity | Total past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 1,138,000   1,138,000   381,000
Residential Portfolio Segment | Home equity | 30-59 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 741,000   741,000   381,000
Residential Portfolio Segment | Home equity | 60-89 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 397,000   397,000   0
Residential Portfolio Segment | Home equity | 90 days or more past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   0
Residential Portfolio Segment | Home equity | Current | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 100,266,000   100,266,000   98,841,000
Residential Portfolio Segment | Other residential          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 100,710,000   100,710,000   110,614,000
Residential Portfolio Segment | Other residential | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 100,710,000   100,710,000   110,614,000
Non-accrual loans 67,000   67,000   72,000
Non-accrual loans with no allowance 0   0   0
Residential Portfolio Segment | Other residential | Total past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 67,000   67,000   72,000
Residential Portfolio Segment | Other residential | 30-59 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   0
Residential Portfolio Segment | Other residential | 60-89 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   0
Residential Portfolio Segment | Other residential | 90 days or more past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 67,000   67,000   72,000
Residential Portfolio Segment | Other residential | Current | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 100,643,000   100,643,000   110,542,000
Installment and other consumer | Installment and other consumer          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 57,377,000   57,377,000   59,548,000
Installment and other consumer | Installment and other consumer | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 57,377,000   57,377,000   59,548,000
Non-accrual loans 44,000   44,000   204,000
Non-accrual loans with no allowance 28,000   28,000   204,000
Installment and other consumer | Installment and other consumer | Total past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 334,000   334,000   1,274,000
Installment and other consumer | Installment and other consumer | 30-59 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 290,000   290,000   1,070,000
Installment and other consumer | Installment and other consumer | 60-89 days past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 0   0   0
Installment and other consumer | Installment and other consumer | 90 days or more past due | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans 44,000   44,000   204,000
Installment and other consumer | Installment and other consumer | Current | Financial asset, other than financial asset acquired with credit deterioration          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Total loans $ 57,043,000   $ 57,043,000   $ 58,274,000