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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2023
Commitments, Contingencies and Guarantees [Line Items] |  |  |  |  |  |  |  |
Off-balance-sheet credit exposure | $ 2,971 | $ 2,966 | $ 2,971 | $ 2,966 | $ 2,939 | $ 3,218 | $ 3,071 | $ 3,567
Off-balance-sheet, liability, credit loss expense (reversal), net of acquisition adjustment |  |  | (243) |  |  |  |  |
Benefit for credit losses - credit commitments | $ (247) | $ (105) | 32 | $ (601) |  |  |  |
Financial Standby Letters of Credit |  |  |  |  |  |  |  |
Commitments, Contingencies and Guarantees [Line Items] |  |  |  |  |  |  |  |
Commitments to extend credit |  |  | $ 66,800 |  | $ 64,300 |  |  |

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- Definition Commitments, contingencies and guarantees. + References No definition available. + Details
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- Definition Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal), Net Of Acquisition Adjustment + References No definition available. + Details
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- Definition Maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-21 + Details
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- Definition Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482454/460-10-45-1 + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476148/220-40-50-22 + Details
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