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Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
Schedule Of Investment Securities | Investment securities at March 31, 2024 and at December 31, 2023, were as follows:
Debt securities AFS (In thousands) |  | Amortized Cost |  | Gross Unrealized Holding Gains |  | Gross Unrealized Holding Losses |  | Fair Value
March 31, 2024: |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 219,886 |  |  | $ | 392 |  |  | $ | 13,752 |  |  | $ | 206,526 |
U.S. Government sponsored entities' asset-backed securities |  | 672,462 |  |  | 13 |  |  | 69,466 |  |  | 603,009 |
Collateralized loan obligations |  | 420,041 |  |  | 320 |  |  | 1,364 |  |  | 418,997 |
Corporate debt securities |  | 22,584 |  |  | 1 |  |  | 2,330 |  |  | 20,255 |
Total |  | $ | 1,334,973 |  |  | $ | 726 |  |  | $ | 86,912 |  |  | $ | 1,248,787 |
Debt securities AFS (In thousands) |  | Amortized Cost |  | Gross Unrealized Holding Gains |  | Gross Unrealized Holding Losses |  | Fair Value
December 31, 2023: |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 251,531 |  |  | $ | 1,173 |  |  | $ | 11,520 |  |  | $ | 241,184 |
U.S. Government sponsored entities' asset-backed securities |  | 703,645 |  |  | 23 |  |  | 68,193 |  |  | 635,475 |
Collateralized loan obligations |  | 443,112 |  |  | 31 |  |  | 4,857 |  |  | 438,286 |
Corporate debt securities |  | 20,482 |  |  | — |  |  | 2,585 |  |  | 17,897 |
Total |  | $ | 1,418,770 |  |  | $ | 1,227 |  |  | $ | 87,155 |  |  | $ | 1,332,842 |
Schedule Of Unrealized Loss On Securities | Investment securities in an unrealized loss position at March 31, 2024, were as follows:
|  | Unrealized loss position for less than 12 months |  | Unrealized loss position for 12 months or longer |  | Total
(In thousands) |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses
Debt securities AFS: |  |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 37,808 |  |  | $ | 276 |  |  | $ | 131,395 |  |  | $ | 13,476 |  |  | $ | 169,203 |  |  | $ | 13,752 |
U.S. Government sponsored entities' asset-backed securities |  | — |  |  | — |  |  | 601,810 |  |  | 69,466 |  |  | 601,810 |  |  | 69,466 |
Collateralized loan obligations |  | 34,873 |  |  | 25 |  |  | 254,721 |  |  | 1,339 |  |  | 289,594 |  |  | 1,364 |
Corporate debt securities |  | 3,001 |  |  | 40 |  |  | 15,360 |  |  | 2,290 |  |  | 18,361 |  |  | 2,330 |
Total |  | $ | 75,682 |  |  | $ | 341 |  |  | $ | 1,003,286 |  |  | $ | 86,571 |  |  | $ | 1,078,968 |  |  | $ | 86,912 |
Investment securities in an unrealized loss position at December 31, 2023, were as follows:
|  | Unrealized loss position for less than 12 months |  | Unrealized loss position for 12 months or longer |  | Total
(In thousands) |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses
Debt securities AFS: |  |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 46,685 |  |  | $ | 420 |  |  | $ | 103,993 |  |  | $ | 11,100 |  |  | $ | 150,678 |  |  | $ | 11,520 |
U.S. Government sponsored entities' asset-backed securities |  | — |  |  | — |  |  | 634,261 |  |  | 68,193 |  |  | 634,261 |  |  | 68,193 |
Collateralized loan obligations |  | — |  |  | — |  |  | 404,019 |  |  | 4,857 |  |  | 404,019 |  |  | 4,857 |
Corporate debt securities |  | 9,530 |  |  | 702 |  |  | 8,367 |  |  | 1,883 |  |  | 17,897 |  |  | 2,585 |
Total |  | $ | 56,215 |  |  | $ | 1,122 |  |  | $ | 1,150,640 |  |  | $ | 86,033 |  |  | $ | 1,206,855 |  |  | $ | 87,155 |
Investments Classified by Contractual Maturity Date | The amortized cost and estimated fair value of investments in debt securities AFS at March 31, 2024, are shown in the following table by contractual maturity, except for asset-backed securities and collateral loan obligations, which are shown as a single total due to the unpredictability of the timing of principal repayments. Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties.
(In thousands) |  | Amortized cost |  | Fair value |  | Tax equivalent yield (1)
Debt Securities AFS |  |  |  |  |  |
Obligations of state and political subdivisions: |  |  |  |  |  |
Due one through five years |  | $ | 1,505 |  |  | $ | 1,503 |  |  | 3.15 | %
Due five through ten years |  | 87,545 |  |  | 85,731 |  |  | 3.26 | %
Due over ten years |  | 130,836 |  |  | 119,292 |  |  | 3.14 | %
Total (1) |  | $ | 219,886 |  |  | $ | 206,526 |  |  | 3.19 | %
U.S. Government sponsored entities' asset-backed securities |  | $ | 672,462 |  |  | $ | 603,009 |  |  | 1.83 | %
Collateralized loan obligations |  | $ | 420,041 |  |  | $ | 418,997 |  |  | 7.23 | %
Corporate debt securities |  |  |  |  |  |
Due one through five years |  | $ | 2,834 |  |  | $ | 2,795 |  |  | 9.21 | %
Due five through ten years |  | 19,750 |  |  | 17,460 |  |  | 4.10 | %
Total |  | $ | 22,584 |  |  | $ | 20,255 |  |  | 4.74 | %

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