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Securities & Allowance for Securities Credit Losses - Narrative (Details) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) position security | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) position security | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) position | Dec. 31, 2022 USD ($)
Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items] |  |  |  |  |  |
Securities | $ 0 |  | $ 0 |  | $ 0 |
Proceeds from debt securities, available-for-sale |  |  | 80,964,000 | $ 28,378,000 |  |
Proceeds from calls, maturities and paydowns |  |  | 5,471,000 | 248,000 |  |
Charge off |  |  | $ 210,000 |  |  |
Available-for-sale, number of positions | position | 792 |  | 792 |  |  |
Held to maturity number of positions | position |  |  |  |  | 880 |
Available sale of securities, percentage of impairment in amortized cost basis | 3.80% |  | 3.80% |  |  |
Held to maturity securities, percentage of impairment in amortized cost basis |  |  |  |  | 6.00% |
Allowance for credit loss | $ 0 | $ 0 | $ 0 | 0 | $ 0 | $ 0
Debt securities, held to maturity non-accrual | 0 |  | 0 |  |  |
Equity securities, gain (loss) | $ 18,000 | (15,000) | $ 11,000 | (15,000) |  |
U.S. government and federal agencies |  |  |  |  |  |
Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items] |  |  |  |  |  |
Available-for-sale, number of positions | position | 46 |  | 46 |  |  |
Available-for-sale, number of securities | security | 61 |  | 61 |  |  |
Allowance for credit loss | $ 0 | 0 | $ 0 | 0 | 0 | 0
Mortgage backed securities |  |  |  |  |  |
Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items] |  |  |  |  |  |
Available-for-sale, number of positions | position | 15 |  | 15 |  |  |
Available-for-sale, number of securities | security | 20 |  | 20 |  |  |
Allowance for credit loss | $ 0 |  | $ 0 |  | 0 |
Corporate Bonds |  |  |  |  |  |
Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items] |  |  |  |  |  |
Available-for-sale, number of positions | position | 89 |  | 89 |  |  |
Available-for-sale, number of securities | security | 108 |  | 108 |  |  |
Allowance for credit loss | $ 0 | 0 | $ 0 | 0 | 0 | 0
State and municipal securities |  |  |  |  |  |
Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items] |  |  |  |  |  |
Available-for-sale, number of positions | position | 269 |  | 269 |  |  |
Available-for-sale, number of securities | security | 306 |  | 306 |  |  |
Allowance for credit loss | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0

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