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Securities (Tables) | 12 Months Ended
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Dec. 31, 2022
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, 2022 and 2021:
December 31, 2022 | Available-for-Sale Debt Securities
(In thousands) | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value
U.S. Treasuries | $ | 190,170 |  | $ | 0 |  | $ | 22,919 |  | $ | 167,251 |
Obligations of U.S. Government sponsored entities | 681,192 |  | 0 |  | 80,025 |  | 601,167 |
Obligations of U.S. states and political subdivisions | 93,599 |  | 8 |  | 8,326 |  | 85,281 |
Mortgage-backed securities – residential, issued by |  |  |  |
U.S. Government agencies | 58,727 |  | 12 |  | 6,071 |  | 52,668 |
U.S. Government sponsored entities | 805,603 |  | 0 |  | 119,381 |  | 686,222 |
U.S. corporate debt securities | 2,500 |  | 0 |  | 122 |  | 2,378 |
Total available-for-sale debt securities | $ | 1,831,791 |  | $ | 20 |  | $ | 236,844 |  | $ | 1,594,967 |
December 31, 2021 | Available-for-Sale Debt Securities
(In thousands) | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value
U.S. Treasuries | $ | 160,291 |  | $ | 85 |  | $ | 2,542 |  | $ | 157,834 |
Obligations of U.S. Government sponsored entities | 843,218 |  | 4,527 |  | 15,372 |  | 832,373 |
Obligations of U.S. states and political subdivisions | 102,177 |  | 2,092 |  | 100 |  | 104,169 |
Mortgage-backed securities – residential, issued by |  |  |  |
U.S. Government agencies | 76,502 |  | 1,187 |  | 532 |  | 77,157 |
U.S. Government sponsored entities | 879,102 |  | 5,735 |  | 14,281 |  | 870,556 |
U.S. corporate debt securities | 2,500 |  | 0 |  | 76 |  | 2,424 |
Total available-for-sale debt securities | $ | 2,063,790 |  | $ | 13,626 |  | $ | 32,903 |  | $ | 2,044,513 |
Schedule of held to maturity securities |
December 31, 2022 | Held-to-Maturity Securities
(In thousands) | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value
U.S. Treasuries | $ | 86,478 |  | $ | 0 |  | $ | 12,937 |  | $ | 73,541 |
Obligations of U.S. Government sponsored entities | 225,866 |  | $ | 0 |  | 37,715 |  | 188,151 |
Total held-to-maturity debt securities | $ | 312,344 |  | $ | 0 |  | $ | 50,652 |  | $ | 261,692 |
| Held-to-Maturity Securities
December 31, 2021 | Amortized Cost | Gross Unrealized Gains | Gross Unrealized Losses | Fair Value
(In thousands) |  |  |  |
U.S. Treasuries | $ | 86,689 |  | $ | 279 |  | $ | 600 |  | $ | 86,368 |
Obligations of U.S. Government sponsored entities | 197,320 |  | 389 |  | 1,789 |  | 195,920 |
Total held-to-maturity debt securities | $ | 284,009 |  | $ | 668 |  | $ | 2,389 |  | $ | 282,288 |
December 31, 2022 |  |
(In thousands) | Amortized Cost | Fair Value
Held-to-maturity securities: |  |
Due after five years through ten years | $ | 312,344 |  | $ | 261,692 |
Total held-to-maturity debt securities | $ | 312,344 |  | $ | 261,692 |
December 31, 2021 |  |
(In thousands) | Amortized Cost | Fair Value
Held-to-maturity securities: |  |
Due after five years through ten years | $ | 284,009 |  | $ | 282,288 |
Total held-to-maturity debt securities | $ | 284,009 |  | $ | 282,288 |
Schedule of sales transactions of available-for-sale securities | The following table sets forth information with regard to sales transactions of debt securities available-for-sale:
| Year ended December 31,
(In thousands) | 2022 | 2021 | 2020
Proceeds from sales | $ | 160,638 |  | $ | 142,679 |  | $ | 42,333 |
Gross realized gains | 0 |  | 1,126 |  | 179 |
Gross realized losses | (11,916) |  | (851) |  | 0 |
Net (loss) gain on sales of available-for-sale debt securities | $ | (11,916) |  | $ | 275 |  | $ | 179 |
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, 2022:
December 31, 2022 | 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 | $ | 28,602 |  | $ | 2,132 |  | $ | 138,649 |  | $ | 20,787 |  | $ | 167,251 |  | $ | 22,919 |
Obligations of U.S. Government sponsored entities | 143,794 |  | 7,508 |  | 457,373 |  | 72,517 |  | 601,167 |  | 80,025 |
Obligations of U.S. states and political subdivisions | 46,638 |  | 2,385 |  | 33,435 |  | 5,941 |  | 80,073 |  | 8,326 |
Mortgage-backed securities – residential, issued by |  |  |  |  |  |
U.S. Government agencies | 22,945 |  | 1,258 |  | 29,356 |  | 4,813 |  | 52,301 |  | 6,071 |
U.S. Government sponsored entities | 186,690 |  | 16,869 |  | 499,532 |  | 102,512 |  | 686,222 |  | 119,381 |
U.S. corporate debt securities | 0 |  | 0 |  | 2,378 |  | 122 |  | 2,378 |  | 122 |
Total available-for-sale debt securities | $ | 428,669 |  | $ | 30,152 |  | $ | 1,160,723 |  | $ | 206,692 |  | $ | 1,589,392 |  | $ | 236,844 |
The following table summarizes available-for-sale debt securities that had unrealized losses at December 31, 2021:
December 31, 2021 | 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 | $ | 147,810 |  | $ | 2,542 |  | $ | 0 |  | $ | 0 |  | $ | 147,810 |  | $ | 2,542 |
Obligations of U.S. Government sponsored entities | 362,895 |  | 6,694 |  | 289,210 |  | 8,678 |  | 652,105 |  | 15,372 |
Obligations of U.S. states and political subdivisions | 9,700 |  | 85 |  | 1,283 |  | 15 |  | 10,983 |  | 100 |
Mortgage-backed securities – residential, issued by |  |  |  |  |  |
U.S. Government agencies | 22,074 |  | 160 |  | 16,846 |  | 372 |  | 38,920 |  | 532 |
U.S. Government sponsored entities | 553,351 |  | 11,440 |  | 84,537 |  | 2,841 |  | 637,888 |  | 14,281 |
U.S. corporate debt securities | 0 |  | 0 |  | 2,424 |  | 76 |  | 2,424 |  | 76 |
Total available-for-sale debt securities | $ | 1,095,830 |  | $ | 20,921 |  | $ | 394,300 |  | $ | 11,982 |  | $ | 1,490,130 |  | $ | 32,903 |
Schedule held-to-maturity securities with unrealized losses | The following table summarizes held-to-maturity debt securities that had unrealized losses at December 31, 2022:
December 31, 2022 | Held-to-Maturity 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 |  | $ | 73,542 |  | $ | 12,937 |  | $ | 73,542 |  | $ | 12,937 |
Obligations of U.S. Government sponsored entities | 24,543 |  | 3,903 |  | 163,607 |  | 33,812 |  | 188,150 |  | 37,715 |
Total held-to-maturity securities | $ | 24,543 |  | $ | 3,903 |  | $ | 237,149 |  | $ | 46,749 |  | $ | 261,692 |  | $ | 50,652 |
The following table summarizes held-to-maturity debt securities that had unrealized losses at December 31, 2021:
December 31, 2021 | Held-to-Maturity 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 | $ | 35,280 |  | $ | 600 |  | $ | 0 |  | $ | 0 |  | $ | 35,280 |  | $ | 600 |
Obligations of U.S. Government sponsored entities | 84,592 |  | 1,789 |  | 0 |  | 0 |  | 84,592 |  | 1,789 |
Total held-to-maturity securities | $ | 119,872 |  | $ | 2,389 |  | $ | 0 |  | $ | 0 |  | $ | 119,872 |  | $ | 2,389 |
Schedule of amortized cost and estimated fair value of debt securities by contractual maturity |
December 31, 2022 |  |
(In thousands) | Amortized Cost | Fair Value
Available-for-sale debt securities: |  |
Due in one year or less | $ | 50,922 |  | $ | 50,269 |
Due after one year through five years | 508,880 |  | 459,721 |
Due after five years through ten years | 367,743 |  | 314,408 |
Due after ten years | 39,916 |  | 31,679 |
Total | 967,461 |  | 856,077 |
Mortgage-backed securities | 864,330 |  | 738,890 |
Total available-for-sale debt securities | $ | 1,831,791 |  | $ | 1,594,967 |
December 31, 2021 |  |
(In thousands) | Amortized Cost | Fair Value
Available-for-sale debt securities: |  |
Due in one year or less | $ | 77,159 |  | $ | 77,892 |
Due after one year through five years | 474,537 |  | 471,776 |
Due after five years through ten years | 501,748 |  | 492,573 |
Due after ten years | 54,742 |  | 54,559 |
Total | 1,108,186 |  | 1,096,800 |
Mortgage-backed securities | 955,604 |  | 947,713 |
Total available-for-sale debt securities | $ | 2,063,790 |  | $ | 2,044,513 |

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