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Loans and Allowance for Credit Losses on Loans - Schedule of Loans Outstanding and Aging Analysis (Details) | 3 Months Ended | 9 Months Ended |
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Sep. 30, 2025 USD ($) loan | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) loan | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | $ 2,090,354,000 |  | $ 2,090,354,000 |  | $ 2,083,256,000
Number of loans 90 days past due and still accruing | loan | 0 |  | 0 |  | 0
Financing receivable, nonaccrual, earning interest on cash basis | $ 0 |  | $ 0 |  | $ 0
Nonaccrual interest income reversal | 5,000 | $ 257,000 | 49,000 | $ 523,000 |
Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 2,090,354,000 |  | 2,090,354,000 |  | 2,083,256,000
Non-accrual loans | 31,489,000 |  | 31,489,000 |  | 33,881,000
Non-accrual loans with no allowance | 11,057,000 |  | 11,057,000 |  | 2,993,000
Total past due | Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 23,504,000 |  | 23,504,000 |  | 16,938,000
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 | 10,483,000 |  | 10,483,000 |  | 2,282,000
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 | 633,000 |  | 633,000 |  | 752,000
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 | 12,388,000 |  | 12,388,000 |  | 13,904,000
Current | Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 2,066,850,000 |  | 2,066,850,000 |  | 2,066,318,000
Commercial Portfolio Segment | Commercial and industrial |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 154,303,000 |  | 154,303,000 |  | 152,263,000
Commercial Portfolio Segment | Commercial and industrial | Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 154,303,000 |  | 154,303,000 |  | 152,263,000
Non-accrual loans | 3,488,000 |  | 3,488,000 |  | 2,845,000
Non-accrual loans with no allowance | 0 |  | 0 |  | 0
Commercial Portfolio Segment | 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 | 3,786,000 |  | 3,786,000 |  | 2,996,000
Commercial Portfolio Segment | 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 | 248,000 |  | 248,000 |  | 203,000
Commercial Portfolio Segment | 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 | 50,000 |  | 50,000 |  | 0
Commercial Portfolio Segment | 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 | 3,488,000 |  | 3,488,000 |  | 2,793,000
Commercial Portfolio Segment | Commercial and industrial | Current | Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 150,517,000 |  | 150,517,000 |  | 149,267,000
Commercial real estate loans | Commercial owner-occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 313,996,000 |  | 313,996,000 |  | 321,962,000
Commercial real estate loans | Commercial owner-occupied | Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 313,996,000 |  | 313,996,000 |  | 321,962,000
Non-accrual loans | 1,488,000 |  | 1,488,000 |  | 1,537,000
Non-accrual loans with no allowance | 1,488,000 |  | 1,488,000 |  | 1,537,000
Commercial real estate loans | Commercial 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 | 375,000 |  | 375,000 |  | 880,000
Commercial real estate loans | Commercial 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 |  | 208,000
Commercial real estate loans | Commercial 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 |  | 559,000
Commercial real estate loans | Commercial 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 | 375,000 |  | 375,000 |  | 113,000
Commercial real estate loans | Commercial owner-occupied | Current | Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 313,621,000 |  | 313,621,000 |  | 321,082,000
Commercial real estate loans | Commercial non-owner occupied |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 1,324,263,000 |  | 1,324,263,000 |  | 1,273,596,000
Commercial real estate loans | Commercial non-owner occupied | Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 1,324,263,000 |  | 1,324,263,000 |  | 1,273,596,000
Non-accrual loans | 25,701,000 |  | 25,701,000 |  | 28,525,000
Non-accrual loans with no allowance | 8,831,000 |  | 8,831,000 |  | 497,000
Commercial real estate loans | Commercial 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 | 18,111,000 |  | 18,111,000 |  | 11,460,000
Commercial real estate loans | Commercial 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 | 9,556,000 |  | 9,556,000 |  | 718,000
Commercial real estate loans | Commercial 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 | 437,000 |  | 437,000 |  | 0
Commercial real estate loans | Commercial 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 |  | 10,742,000
Commercial real estate loans | Commercial non-owner occupied | Current | Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 1,306,152,000 |  | 1,306,152,000 |  | 1,262,136,000
Commercial real estate loans | Construction |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 15,869,000 |  | 15,869,000 |  | 36,970,000
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 | 15,869,000 |  | 15,869,000 |  | 36,970,000
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 | 15,869,000 |  | 15,869,000 |  | 36,970,000
Residential Portfolio Segment | Home equity |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 95,872,000 |  | 95,872,000 |  | 88,325,000
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 | 95,872,000 |  | 95,872,000 |  | 88,325,000
Non-accrual loans | 553,000 |  | 553,000 |  | 752,000
Non-accrual loans with no allowance | 553,000 |  | 553,000 |  | 752,000
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 | 555,000 |  | 555,000 |  | 1,172,000
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 | 407,000 |  | 407,000 |  | 738,000
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 | 0 |  | 0 |  | 186,000
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 | 148,000 |  | 148,000 |  | 248,000
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 | 95,317,000 |  | 95,317,000 |  | 87,153,000
Residential Portfolio Segment | Other residential |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 122,924,000 |  | 122,924,000 |  | 143,207,000
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 | 122,924,000 |  | 122,924,000 |  | 143,207,000
Non-accrual loans | 74,000 |  | 74,000 |  | 0
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 | 74,000 |  | 74,000 |  | 0
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 | 74,000 |  | 74,000 |  | 0
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 | 122,850,000 |  | 122,850,000 |  | 143,207,000
Installment and other consumer loans | Installment and other consumer loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 63,127,000 |  | 63,127,000 |  | 66,933,000
Installment and other consumer loans | Installment and other consumer loans | Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 63,127,000 |  | 63,127,000 |  | 66,933,000
Non-accrual loans | 185,000 |  | 185,000 |  | 222,000
Non-accrual loans with no allowance | 185,000 |  | 185,000 |  | 207,000
Installment and other consumer loans | Installment and other consumer loans | Total past due | Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | 603,000 |  | 603,000 |  | 430,000
Installment and other consumer loans | Installment and other consumer loans | 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 | 272,000 |  | 272,000 |  | 415,000
Installment and other consumer loans | Installment and other consumer loans | 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 | 146,000 |  | 146,000 |  | 7,000
Installment and other consumer loans | Installment and other consumer loans | 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 | 185,000 |  | 185,000 |  | 8,000
Installment and other consumer loans | Installment and other consumer loans | Current | Financial asset, other than financial asset acquired with credit deterioration |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total loans | $ 62,524,000 |  | $ 62,524,000 |  | $ 66,503,000

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