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Investment Securities (Tables) | 9 Months Ended
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Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract] |
Schedule of amortized cost and fair value of securities | Fair value of equity securities with readily determinable fair values at September 30, 2025 and December 31, 2024, are as follows:
(In thousands) | Fair Value at Beginning of Period |  |  |  | Gains (Losses) |  | Fair Value at End of Period
Nine Months Ended September 30, 2025 |  |  |  |  |  |  |
CRA Mutual Fund | $ | 919 |  |  |  |  | $ | 26 |  |  | $ | 945 |
Twelve Months Ended December 31, 2024 |  |  |  |  |  |  |
CRA Mutual Fund | $ | 928 |  |  |  |  | $ | (9) |  |  | $ | 919 |
Amortized cost and fair value of investment securities were as follows:
(In thousands) | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
September 30, 2025 |  |  |  |  |  |  |
Available for Sale |  |  |  |  |  |  |
U.S. Government and agencies | $ | 148,469 |  |  | $ | — |  |  | $ | 10,696 |  |  | $ | 137,773 |
Collateralized mortgage obligations | 54,782 |  |  | 182 |  |  | 2,489 |  |  | 52,475 |
Residential mortgage-backed securities | 163,697 |  |  | 381 |  |  | 14,270 |  |  | 149,808 |
Commercial mortgage-backed securities | 93,389 |  |  | 800 |  |  | 3,957 |  |  | 90,232 |
State and municipal | 4,066 |  |  | — |  |  | 28 |  |  | 4,038 |
Corporate bonds | 28,856 |  |  | 309 |  |  | 1,274 |  |  | 27,891 |
| $ | 493,259 |  |  | $ | 1,672 |  |  | $ | 32,714 |  |  | $ | 462,217 |
Held to Maturity |  |  |  |  |  |  |
State and municipal | $ | 62,170 |  |  | $ | — |  |  | $ | 6,442 |  |  | $ | 55,728 |
Residential mortgage-backed securities | 1,238 |  |  | — |  |  | 34 |  |  | 1,204 |
| $ | 63,408 |  |  | $ | — |  |  | $ | 6,476 |  |  | $ | 56,932 |
December 31, 2024 |  |  |  |  |  |  |
Available for Sale |  |  |  |  |  |  |
U.S. Government and agencies | $ | 159,799 |  |  | $ | — |  |  | $ | 16,606 |  |  | $ | 143,193 |
Collateralized mortgage obligations | 39,540 |  |  | — |  |  | 3,886 |  |  | 35,654 |
Residential mortgage-backed securities | 159,349 |  |  | 2 |  |  | 20,811 |  |  | 138,540 |
Commercial mortgage-backed securities | 65,350 |  |  | — |  |  | 4,565 |  |  | 60,785 |
Corporate bonds | 17,600 |  |  | — |  |  | 1,797 |  |  | 15,803 |
| $ | 441,638 |  |  | $ | 2 |  |  | $ | 47,665 |  |  | $ | 393,975 |
Held to Maturity |  |  |  |  |  |  |
State and municipal | $ | 62,838 |  |  | $ | — |  |  | $ | 7,586 |  |  | $ | 55,252 |
Residential mortgage-backed securities | 1,740 |  |  | — |  |  | 68 |  |  | 1,672 |
| $ | 64,578 |  |  | $ | — |  |  | $ | 7,654 |  |  | $ | 56,924 |
Schedule of unrealized losses and fair value | The following table shows the Corporation’s investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at September 30, 2025, and December 31, 2024:
| Less than 12 Months |  | 12 Months or More |  | Total
(In thousands) | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
September 30, 2025 |  |  |  |  |  |  |  |  |  |  |
Available for Sale |  |  |  |  |  |  |  |  |  |  |
U.S. Government and agencies | $ | — |  |  | $ | — |  |  | $ | 137,773 |  |  | $ | 10,696 |  |  | $ | 137,773 |  |  | $ | 10,696 |
Collateralized mortgage obligations | 4,538 |  |  | 31 |  |  | 33,012 |  |  | 2,458 |  |  | 37,550 |  |  | 2,489 |
Residential mortgage-backed securities | 2,493 |  |  | 31 |  |  | 128,239 |  |  | 14,239 |  |  | 130,732 |  |  | 14,270 |
Commercial mortgage-backed securities | 1,293 |  |  | 1 |  |  | 27,571 |  |  | 3,956 |  |  | 28,864 |  |  | 3,957 |
State and municipal | 4,038 |  |  | 28 |  |  | — |  |  | — |  |  | 4,038 |  |  | 28 |
Corporate bonds | — |  |  | — |  |  | 12,826 |  |  | 1,274 |  |  | 12,826 |  |  | 1,274 |
| $ | 12,362 |  |  | $ | 91 |  |  | $ | 339,421 |  |  | $ | 32,623 |  |  | $ | 351,783 |  |  | $ | 32,714 |
Held to Maturity |  |  |  |  |  |  |  |  |  |  |
State and municipal | $ | — |  |  | $ | — |  |  | $ | 55,728 |  |  | $ | 6,442 |  |  | $ | 55,728 |  |  | $ | 6,442 |
Residential mortgage-backed securities | — |  |  | — |  |  | 1,204 |  |  | 34 |  |  | 1,204 |  |  | 34 |
| $ | — |  |  | $ | — |  |  | $ | 56,932 |  |  | $ | 6,476 |  |  | $ | 56,932 |  |  | $ | 6,476 |
December 31, 2024 |  |  |  |  |  |  |  |  |  |  |
Available for Sale |  |  |  |  |  |  |  |  |  |  |
U.S. Government and agencies | $ | — |  |  | $ | — |  |  | $ | 143,193 |  |  | $ | 16,606 |  |  | $ | 143,193 |  |  | $ | 16,606 |
Collateralized mortgage obligations | — |  |  | — |  |  | 35,654 |  |  | 3,886 |  |  | 35,654 |  |  | 3,886 |
Residential mortgage-backed securities | 2,692 |  |  | 26 |  |  | 135,626 |  |  | 20,785 |  |  | 138,318 |  |  | 20,811 |
Commercial mortgage-backed securities | 31,860 |  |  | 73 |  |  | 28,925 |  |  | 4,492 |  |  | 60,785 |  |  | 4,565 |
Corporate bonds | — |  |  | — |  |  | 15,803 |  |  | 1,797 |  |  | 15,803 |  |  | 1,797 |
| $ | 34,552 |  |  | $ | 99 |  |  | $ | 359,201 |  |  | $ | 47,566 |  |  | $ | 393,753 |  |  | $ | 47,665 |
Held to Maturity |  |  |  |  |  |  |  |  |  |  |
State and municipal | $ | — |  |  | $ | — |  |  | $ | 55,252 |  |  | $ | 7,586 |  |  | $ | 55,252 |  |  | $ | 7,586 |
Residential mortgage-backed securities | — |  |  | — |  |  | 1,672 |  |  | 68 |  |  | 1,672 |  |  | 68 |
| $ | — |  |  | $ | — |  |  | $ | 56,924 |  |  | $ | 7,654 |  |  | $ | 56,924 |  |  | $ | 7,654 |
Schedule of amortized cost and fair value by contractual maturity | Amortized cost and fair value at September 30, 2025, by contractual maturity, where applicable, are shown below. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay with or without penalties. Securities not due at a single maturity date are shown separately below.
| Available for Sale |  | Held to Maturity
(In thousands) | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
1 year or less | $ | 8,756 |  |  | $ | 8,720 |  |  | $ | 400 |  |  | $ | 393 |
Over 1 year through 5 years | 135,684 |  |  | 128,082 |  |  | 4,640 |  |  | 4,320 |
Over 5 years through 10 years | 32,885 |  |  | 28,863 |  |  | 37,322 |  |  | 35,153 |
Over 10 years | 4,066 |  |  | 4,037 |  |  | 19,808 |  |  | 15,862 |
Mortgage-backed securities | 311,868 |  |  | 292,515 |  |  | 1,238 |  |  | 1,204 |
| $ | 493,259 |  |  | $ | 462,217 |  |  | $ | 63,408 |  |  | $ | 56,932 |
Gain (Loss) on Securities | The proceeds from sales and calls of securities and the associated gains and losses are listed below:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(In thousands) | 2025 |  | 2024 |  | 2025 |  | 2024
Proceeds from sales | $ | — |  |  | $ | — |  |  | $ | 98,272 |  |  | $ | 14,336 |
Proceeds from calls | 2,000 |  |  | — |  |  | 14,322 |  |  | 1,984 |
Gross gains | — |  |  | — |  |  | 56 |  |  | 87 |
Gross losses | — |  |  | — |  |  | 34 |  |  | 18 |

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