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Loans and Allowance for Credit Losses on Loans - Schedule of Collateral-Dependent Non-Accrual Loans (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	$ 25,501,000	$ 25,172,000	$ 23,330,000	$ 22,983,000
Nonaccrual collateral dependent loans in process of foreclosure	$ 0	$ 0
Weighted average ratio of loans value to collateral dependent loans value	82.00%	70.00%
Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	$ 4,076,000	$ 5,295,000
Allowance for credit losses	496,000	408,000
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	3,462,000	4,826,000
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	473,000	469,000
Blanket Lien
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0	0
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	141,000	0
Commercial loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	1,727,000	1,712,000	1,941,000	1,794,000
Commercial loans | Commercial and industrial | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans		1,311,000
Allowance for credit losses		0
Commercial loans | Commercial and industrial | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans		1,311,000
Commercial loans | Commercial and industrial | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans		0
Commercial loans | Commercial and industrial | Blanket Lien
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans		0
Commercial loans | Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans		0
Commercial real estate loans | Commercial owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	2,500,000	2,476,000	2,640,000	2,487,000
Commercial real estate loans | Commercial owner-occupied | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	416,000	434,000
Allowance for credit losses	0	0
Commercial real estate loans | Commercial owner-occupied | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	416,000	434,000
Commercial real estate loans | Commercial owner-occupied | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0	0
Commercial real estate loans | Commercial owner-occupied | Blanket Lien
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0	0
Commercial real estate loans | Commercial owner-occupied | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0	0
Commercial real estate loans | Commercial non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	15,704,000	14,933,000	12,701,000	12,676,000
Commercial real estate loans | Commercial non-owner occupied | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	3,046,000	3,081,000
Allowance for credit losses	496,000	408,000
Commercial real estate loans | Commercial non-owner occupied | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	3,046,000	3,081,000
Commercial real estate loans | Commercial non-owner occupied | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0	0
Commercial real estate loans | Commercial non-owner occupied | Blanket Lien
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0
Commercial real estate loans | Commercial non-owner occupied | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0	0
Residential loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	627,000	552,000	538,000	558,000
Residential loans | Home equity | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	473,000	469,000
Allowance for credit losses	0	0
Residential loans | Home equity | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0	0
Residential loans | Home equity | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	473,000	469,000
Residential loans | Home equity | Blanket Lien
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0	0
Residential loans | Home equity | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0	0
Consumer loans | Installment and other consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	920,000	$ 976,000	$ 882,000	$ 868,000
Consumer loans | Installment and other consumer loans | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	141,000
Allowance for credit losses	0
Consumer loans | Installment and other consumer loans | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0
Consumer loans | Installment and other consumer loans | Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0
Consumer loans | Installment and other consumer loans | Blanket Lien
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	0
Consumer loans | Installment and other consumer loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	$ 141,000

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