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Loans and ACL - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net unamortized deferred loan costs	$ 3,129		$ 3,129		$ 3,330
Threshold period of continuous performance to return loans to accrual status (in months)			6 months
Advance in connection with impaired loans	79		$ 79		43
Defaulted loans	0	$ 0	0	$ 0
Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest receivable	6,592		6,592		6,384
Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 3,426		$ 3,426		254
Minimum | Risk rating 4
Accounts, Notes, Loans and Financing Receivable [Line Items]
Delinquency period			10 days
Minimum | Risk rating 5
Accounts, Notes, Loans and Financing Receivable [Line Items]
Threshold period past due	30 days		30 days
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, amortization term (in years)			30 years
Maximum | Risk rating 4
Accounts, Notes, Loans and Financing Receivable [Line Items]
Delinquency period			30 days
Maximum | Risk rating 5
Accounts, Notes, Loans and Financing Receivable [Line Items]
Threshold period past due	60 days		60 days
Commercial And Agricultural Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum percentage of loan			0.80
Commercial And Agricultural Portfolio Segment | Customer Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum amount of loans			$ 18,000
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum percentage of loan			1
Maximum percentage of principal, interest, taxes and hazard insurance on property over gross income			0.28
Maximum percentage of debt servicing over gross income			0.40
Maximum amount without corporation approval			$ 1,000
Residential, Privately Insured, Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum percentage of loan			0.80
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum days of consumer loan charged off	180 days		180 days
Consumer | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 0		$ 0		$ 0
Consumer | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, amortization term (in years)			15 years
Commercial, Agricultural, and Residential Portfolio Segments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of days past due (or more), accrual of interest discontinued			90 days

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