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v3.25.3

Investment Securities - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) | Sep. 30, 2025 USD ($) position investment | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) investment | Dec. 31, 2023 USD ($)
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Carrying value of securities pledged to secure public deposits and other contractual obligations |  | $ 449,500 |  | $ 424,800 |
Pledging requirements for credit derivatives and SWAP agreements - securities |  |  | $ 0 | $ 0 |
Number of investments in non federal issuer representing more than 10% of shareholder's equity | investment |  | 0 |  | 0 |
Maximum investment in any single non-federal issuer representing shareholders equity |  | 10.00% |  | 10.00% |
Fair value HTM in unrealized loss with no ACL |  | $ 108,080 |  | $ 115,007 |
Unrealized loss included in fair value of securities HTM in unrealized loss position for which an ACL has not been recorded |  | 14,148 |  | 19,104 |
Fair value AFS in unrealized loss with no ACL |  | 270,073 |  | 271,800 |
Unrealized loss included in fair value of securities AFS in unrealized loss position for which an ACL has not been recorded |  | 31,797 |  | 39,575 |
Fair value of securities AFS in unrealized loss position for which an ACL has been recorded, net of allowance |  | 8,800 |  |  |
Unrealized loss position included in fair value of securities AFS in unrealized loss position for which an ACL has been recorded |  | 137 |  |  |
Allowance for credit losses |  | $ 18 |  | 839 |
U.S. Government Corporations and Agencies [Member] |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Held-to-maturity, securities in unrealized loss positions, qualitative disclosure, number of positions | position |  | 89 |  |  |
Debt securities, available-for-sale, unrealized loss position, number of positions | position |  | 101 |  |  |
Collateralized mortgage obligations |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Fair value AFS in unrealized loss with no ACL |  | $ 1,449 |  | 1,685 |
Unrealized loss included in fair value of securities AFS in unrealized loss position for which an ACL has not been recorded |  | $ 87 |  | 133 |
Debt securities, available-for-sale, unrealized loss position, number of positions | position |  | 2 |  |  |
Allowance for credit losses |  | $ 0 |  | 0 |
Corporate bonds |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Fair value AFS in unrealized loss with no ACL |  | 57,422 |  |  |
Unrealized loss included in fair value of securities AFS in unrealized loss position for which an ACL has not been recorded |  | $ 3,573 |  |  |
Debt securities, available-for-sale, unrealized loss position, number of positions | position |  | 8 |  |  |
Allowance for credit losses |  | $ 18 | 642 | $ 839 | $ 731
Number of securities | investment |  | 18 |  |  |
Allowance for credit losses, reversed | $ 719 | $ 19 | $ 89 |  |
Available-for-sale Securities |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Accrued interest receivable |  | 1,200 |  |  |
Allowance for credit losses |  | $ 18 |  |  |

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