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Securities (Tables) | 12 Months Ended
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Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
Schedule of Available-for-Sale Securities | The following tables summarize available-for-sale debt securities held by the Company at December 31, 2024 and 2023:
December 31, 2024 | Available-for-Sale Debt Securities
(In thousands) | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value
U.S. Treasuries | $ | 75,141 |  | $ | 140 |  | $ | 3,784 |  | $ | 71,497 |
Obligations of U.S. Government sponsored entities | 398,648 |  | 2,008 |  | 20,376 |  | 380,280 |
Obligations of U.S. states and political subdivisions | 86,328 |  | 4 |  | 8,638 |  | 77,694 |
Mortgage-backed securities – residential, issued by |  |  |  |
U.S. Government agencies | 68,130 |  | 3 |  | 4,879 |  | 63,254 |
U.S. Government sponsored entities | 736,376 |  | 1,680 |  | 101,696 |  | 636,360 |
U.S. corporate debt securities | 2,500 |  | 0 |  | 53 |  | 2,447 |
Total available-for-sale debt securities | $ | 1,367,123 |  | $ | 3,835 |  | $ | 139,426 |  | $ | 1,231,532 |
December 31, 2023 | Available-for-Sale Debt Securities
(In thousands) | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value
U.S. Treasuries | $ | 114,418 |  | $ | 495 |  | $ | 5,009 |  | $ | 109,904 |
Obligations of U.S. Government sponsored entities | 472,286 |  | 6,449 |  | 22,277 |  | 456,458 |
Obligations of U.S. states and political subdivisions | 89,999 |  | 2 |  | 8,077 |  | 81,924 |
Mortgage-backed securities – residential, issued by |  |  |  |
U.S. Government agencies | 49,976 |  | 8 |  | 4,744 |  | 45,240 |
U.S. Government sponsored entities | 819,303 |  | 2,422 |  | 100,895 |  | 720,830 |
U.S. corporate debt securities | 2,500 |  | 0 |  | 206 |  | 2,294 |
Total available-for-sale debt securities | $ | 1,548,482 |  | $ | 9,376 |  | $ | 141,208 |  | $ | 1,416,650 |
Schedule of Held to Maturity Securities | The following tables summarize held-to-maturity debt securities held by the Company at December 31, 2024 and 2023:
December 31, 2024 | Held-to-Maturity Debt Securities
(In thousands) | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value
U.S. Treasuries | $ | 86,049 |  | $ | 0 |  | $ | 11,361 |  | $ | 74,688 |
Obligations of U.S. Government sponsored entities | 226,413 |  | $ | 0 |  | 33,806 |  | 192,607 |
Total held-to-maturity debt securities | $ | 312,462 |  | $ | 0 |  | $ | 45,167 |  | $ | 267,295 |
December 31, 2023 | Held-to-Maturity Debt Securities
(In thousands) | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value
U.S. Treasuries | $ | 86,266 |  | $ | 0 |  | $ | 11,051 |  | $ | 75,215 |
Obligations of U.S. Government sponsored entities | 226,135 |  | 0 |  | 33,895 |  | 192,240 |
Total held-to-maturity debt securities | $ | 312,401 |  | $ | 0 |  | $ | 44,946 |  | $ | 267,455 |
The following table summarizes held-to-maturity debt securities that had unrealized losses at December 31, 2024:
December 31, 2024 | Held-to-Maturity Debt Securities
| Less than 12 Months | 12 Months or Longer | Total
(In thousands) | Fair Value | Unrealized Losses | Fair Value | Unrealized Losses | Fair Value | Unrealized Losses
U.S. Treasuries | $ | 0 |  | $ | 0 |  | $ | 74,688 |  | $ | 11,361 |  | $ | 74,688 |  | $ | 11,361 |
Obligations of U.S. Government sponsored entities | 0 |  | 0 |  | 192,607 |  | 33,806 |  | 192,607 |  | 33,806 |
Total held-to-maturity debt securities | $ | 0 |  | $ | 0 |  | $ | 267,295 |  | $ | 45,167 |  | $ | 267,295 |  | $ | 45,167 |
The following table summarizes held-to-maturity debt securities that had unrealized losses at December 31, 2023:
December 31, 2023 | Held-to-Maturity Debt Securities
| Less than 12 Months | 12 Months or Longer | Total
(In thousands) | Fair Value | Unrealized Losses | Fair Value | Unrealized Losses | Fair Value | Unrealized Losses
U.S. Treasuries | $ | 0 |  | $ | 0 |  | $ | 75,215 |  | $ | 11,051 |  | $ | 75,215 |  | $ | 11,051 |
Obligations of U.S. Government sponsored entities | 0 |  | 0 |  | 192,240 |  | 33,895 |  | 192,240 |  | 33,895 |
Total held-to-maturity debt securities | $ | 0 |  | $ | 0 |  | $ | 267,455 |  | $ | 44,946 |  | $ | 267,455 |  | $ | 44,946 |
December 31, 2024 |  |
(In thousands) | Amortized Cost | Fair Value
Held-to-maturity debt securities: |  |
Due after one year through five years | $ | 117,283 |  | $ | 102,173 |
Due after five years through ten years | 195,179 |  | 165,122 |
Total held-to-maturity debt securities | $ | 312,462 |  | $ | 267,295 |
December 31, 2023 |  |
(In thousands) | Amortized Cost | Fair Value
Held-to-maturity debt securities: |  |
Due after five years through ten years | $ | 312,401 |  | $ | 267,455 |
Total held-to-maturity debt securities | $ | 312,401 |  | $ | 267,455 |
Schedule of Sales Transactions of Available-for-Sale Securities | The following table sets forth information with regard to sales transactions of available-for-sale debt securities:
| Year ended December 31,
(In thousands) | 2024 | 2023 | 2022
Proceeds from sales | $ | 39,952 |  | $ | 440,488 |  | $ | 160,638 |
Gross realized gains | 50 |  | 0 |  | 0 |
Gross realized losses | 0 |  | (69,983) |  | (11,916) |
Net gain (loss) on sales of available-for-sale debt securities | $ | 50 |  | $ | (69,983) |  | $ | (11,916) |
Schedule of Debt Securities, Available for Sale with Unrealized Losses | The following table summarizes available-for-sale debt securities that had unrealized losses at December 31, 2024:
December 31, 2024 | Available-for-Sale Debt Securities
| Less than 12 Months | 12 Months or Longer | Total
(In thousands) | Fair Value | Unrealized Losses | Fair Value | Unrealized Losses | Fair Value | Unrealized Losses
U.S. Treasuries | $ | 0 |  | $ | 0 |  | $ | 57,019 |  | $ | 3,784 |  | $ | 57,019 |  | $ | 3,784 |
Obligations of U.S. Government sponsored entities | 14,085 |  | 515 |  | 188,296 |  | 19,861 |  | 202,381 |  | 20,376 |
Obligations of U.S. states and political subdivisions | 3,159 |  | 36 |  | 73,657 |  | 8,602 |  | 76,816 |  | 8,638 |
Mortgage-backed securities – residential, issued by |  |  |  |  |  |
U.S. Government agencies | 27,082 |  | 89 |  | 35,879 |  | 4,790 |  | 62,961 |  | 4,879 |
U.S. Government sponsored entities | 32,063 |  | 502 |  | 523,353 |  | 101,194 |  | 555,416 |  | 101,696 |
U.S. corporate debt securities | 0 |  | 0 |  | 2,447 |  | 53 |  | 2,447 |  | 53 |
Total available-for-sale debt securities | $ | 76,389 |  | $ | 1,142 |  | $ | 880,651 |  | $ | 138,284 |  | $ | 957,040 |  | $ | 139,426 |
The following table summarizes available-for-sale debt securities that had unrealized losses at December 31, 2023:
December 31, 2023 | Available-for-Sale Debt Securities
| Less than 12 Months | 12 Months or Longer | Total
(In thousands) | Fair Value | Unrealized Losses | Fair Value | Unrealized Losses | Fair Value | Unrealized Losses
U.S. Treasuries | $ | 0 |  | $ | 0 |  | $ | 65,663 |  | $ | 5,009 |  | $ | 65,663 |  | $ | 5,009 |
Obligations of U.S. Government sponsored entities | 14,453 |  | 110 |  | 220,913 |  | 22,167 |  | 235,366 |  | 22,277 |
Obligations of U.S. states and political subdivisions | 10,572 |  | 106 |  | 69,601 |  | 7,971 |  | 80,173 |  | 8,077 |
Mortgage-backed securities – residential, issued by |  |  |  |  |  |
U.S. Government agencies | 1,145 |  | 4 |  | 43,764 |  | 4,740 |  | 44,909 |  | 4,744 |
U.S. Government sponsored entities | 5,659 |  | 66 |  | 609,456 |  | 100,829 |  | 615,115 |  | 100,895 |
U.S. corporate debt securities | 0 |  | 0 |  | 2,294 |  | 206 |  | 2,294 |  | 206 |
Total available-for-sale debt securities | $ | 31,829 |  | $ | 286 |  | $ | 1,011,691 |  | $ | 140,922 |  | $ | 1,043,520 |  | $ | 141,208 |
Schedule of amortized cost and estimated fair value of debt securities by contractual maturity | The amortized cost and estimated fair value of debt securities by contractual maturity are shown in the following table. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Mortgage-backed securities are shown separately since they are not due at a single maturity date.
December 31, 2024 |  |
(In thousands) | Amortized Cost | Fair Value
Available-for-sale debt securities: |  |
Due in one year or less | $ | 100,000 |  | $ | 99,153 |
Due after one year through five years | 227,502 |  | 215,976 |
Due after five years through ten years | 212,789 |  | 199,457 |
Due after ten years | 22,326 |  | 17,332 |
Total | 562,617 |  | 531,918 |
Mortgage-backed securities | 804,506 |  | 699,614 |
Total available-for-sale debt securities | $ | 1,367,123 |  | $ | 1,231,532 |
December 31, 2023 |  |
(In thousands) | Amortized Cost | Fair Value
Available-for-sale debt securities: |  |
Due in one year or less | $ | 99,242 |  | $ | 98,650 |
Due after one year through five years | 307,093 |  | 296,279 |
Due after five years through ten years | 245,617 |  | 233,569 |
Due after ten years | 27,251 |  | 22,082 |
Total | 679,203 |  | 650,580 |
Mortgage-backed securities | 869,279 |  | 766,070 |
Total available-for-sale debt securities | $ | 1,548,482 |  | $ | 1,416,650 |

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