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Financial Derivative Instruments (Details)	Mar. 31, 2025 USD ($) derivative	Dec. 31, 2024 USD ($) derivative	Mar. 31, 2024 USD ($) derivative
Interest rate swap agreements | Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	$ 225,000,000	$ 225,000,000	$ 235,000,000
Fair Value	(1,016,000)	(560,000)	618,000
Customer loan interest swap agreements
Derivative [Line Items]
Collateral posted	0
Cash Flow Hedging | Interest rate swap agreements | Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	75,000,000	75,000,000	85,000,000
Fair Value	$ 104,000	198,000	931,000
Cash Flow Hedging | Interest Rate Swap April 27 2024 | Designated as Hedging Instrument
Derivative [Line Items]
Fixed Rate Paid	2.619%
Cash Flow Hedging | Interest Rate Swap April 27 2024 | Designated as Hedging Instrument | Other Assets
Derivative [Line Items]
Notional Amount	$ 0	0	10,000,000
Fair Value	$ 0	0	21,000
Cash Flow Hedging | Interest Rate Swap January 01 2026 | Designated as Hedging Instrument
Derivative [Line Items]
Fixed Rate Paid	3.836%
Cash Flow Hedging | Interest Rate Swap January 01 2026 | Designated as Hedging Instrument | Other Assets
Derivative [Line Items]
Notional Amount	$ 75,000,000	75,000,000	75,000,000
Fair Value	$ 104,000	$ 198,000	$ 910,000
Cash Flow Hedging | Customer loan interest swap agreements | Designated as Hedging Instrument
Derivative [Line Items]
Number of Positions | derivative	12	10	7
Cash Flow Hedging | Customer loan interest swap agreements | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	$ 116,258,000	$ 95,514,000	$ 81,186,000
Fair Value	$ 0	$ 0	$ 0
Number of Positions | derivative	24	20	14
Cash Flow Hedging | Customer loan interest swap agreements | Not Designated as Hedging Instrument | Pay Fixed, Receive Variable
Derivative [Line Items]
Notional Amount	$ 58,129,000	$ 47,757,000	$ 40,593,000
Fair Value	$ 3,652,000	$ 4,685,000	$ 4,778,000
Number of Positions | derivative	12	10	7
Cash Flow Hedging | Customer loan interest swap agreements | Not Designated as Hedging Instrument | Receive Fixed, Pay Variable
Derivative [Line Items]
Notional Amount	$ 58,129,000	$ 47,757,000	$ 40,593,000
Fair Value	$ (3,652,000)	$ (4,685,000)	$ (4,778,000)
Number of Positions | derivative	12	10	7
Cash Flow Hedging | Customer loan interest swap agreements | Not Designated as Hedging Instrument | Other Assets | Pay Fixed, Receive Variable
Derivative [Line Items]
Notional Amount	$ 34,398,000	$ 43,415,000	$ 40,593,000
Fair Value	$ 4,078,000	$ 4,772,000	$ 4,778,000
Number of Positions | derivative	6	8	7
Cash Flow Hedging | Customer loan interest swap agreements | Not Designated as Hedging Instrument | Other Assets | Receive Fixed, Pay Variable
Derivative [Line Items]
Notional Amount	$ 23,731,000	$ 4,342,000	$ 0
Fair Value	$ 426,000	$ 87,000	$ 0
Number of Positions | derivative	6	2	0
Cash Flow Hedging | Customer loan interest swap agreements | Not Designated as Hedging Instrument | Other Liabilities | Pay Fixed, Receive Variable
Derivative [Line Items]
Notional Amount	$ 23,731,000	$ 4,342,000	$ 0
Fair Value	$ (426,000)	$ (87,000)	$ 0
Number of Positions | derivative	6	2	0
Cash Flow Hedging | Customer loan interest swap agreements | Not Designated as Hedging Instrument | Other Liabilities | Receive Fixed, Pay Variable
Derivative [Line Items]
Notional Amount	$ 34,398,000	$ 43,415,000	$ 40,593,000
Fair Value	$ (4,078,000)	$ (4,772,000)	$ (4,778,000)
Number of Positions | derivative	6	8	7
Fair Value Hedging | Interest rate swap agreements | Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	$ 150,000,000	$ 150,000,000	$ 150,000,000
Fair Value	$ (1,120,000)	(758,000)	(313,000)
Fair Value Hedging | Interest Rate Swap March 01 2026 | Designated as Hedging Instrument
Derivative [Line Items]
Fixed Rate Paid	4.712%
Fair Value Hedging | Interest Rate Swap March 01 2026 | Designated as Hedging Instrument | Other Liabilities
Derivative [Line Items]
Notional Amount	$ 40,000,000	40,000,000	40,000,000
Fair Value	$ (256,000)	(270,000)	(126,000)
Fair Value Hedging | Interest Rate Swap March 01 2027 | Designated as Hedging Instrument
Derivative [Line Items]
Fixed Rate Paid	4.402%
Fair Value Hedging | Interest Rate Swap March 01 2027 | Designated as Hedging Instrument | Other Liabilities
Derivative [Line Items]
Notional Amount	$ 30,000,000	30,000,000	30,000,000
Fair Value	$ (367,000)	(216,000)	(132,000)
Fair Value Hedging | Interest Rate Swap March 01 2028 | Designated as Hedging Instrument
Derivative [Line Items]
Fixed Rate Paid	4.189%
Fair Value Hedging | Interest Rate Swap March 01 2028 | Designated as Hedging Instrument | Other Liabilities
Derivative [Line Items]
Notional Amount	$ 30,000,000	30,000,000	30,000,000
Fair Value	$ (431,000)	(137,000)	(127,000)
Fair Value Hedging | Interest Rate Swap August 01 2025 | Designated as Hedging Instrument
Derivative [Line Items]
Fixed Rate Paid	4.703%
Fair Value Hedging | Interest Rate Swap August 01 2025 | Designated as Hedging Instrument | Other Assets
Derivative [Line Items]
Notional Amount			50,000,000
Fair Value			$ 72,000
Fair Value Hedging | Interest Rate Swap August 01 2025 | Designated as Hedging Instrument | Other Liabilities
Derivative [Line Items]
Notional Amount	$ 50,000,000	50,000,000
Fair Value	$ (66,000)	$ (135,000)

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Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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Fixed interest rate related to the interest rate derivative.

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