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INVESTMENT SECURITIES | 9 Months Ended
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Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract] |
INVESTMENT SECURITIES | INVESTMENT SECURITIES Investment Securities Available for Sale Investment securities available for sale at September 30, 2024 and December 31, 2023 were as follows:
| September 30, 2024
(dollars in thousands) | Amortized cost |  | Gross unrealized gains |  | Gross unrealized losses |  | Basis Adjustments(2) |  | Fair value
Investment securities available for sale |  |  |  |  |  |  |  |  |
U.S. government sponsored entities and U.S. agency securities | $ | 44,046 |  |  | $ | 150 |  |  | $ | (1,372) |  |  | — |  |  | $ | 42,824 |
Mortgage-backed securities - agency | 897,052 |  |  | 5,103 |  |  | (67,253) |  |  | (138) |  |  | 834,764 |
Mortgage-backed securities - non-agency | 87,241 |  |  | 1,447 |  |  | (2,762) |  |  | — |  |  | 85,926 |
State and municipal securities | 74,816 |  |  | 592 |  |  | (4,937) |  |  | — |  |  | 70,471 |
Corporate securities | 94,424 |  |  | 306 |  |  | (6,768) |  |  | — |  |  | 87,962 |
Other securities(1) | 90,181 |  |  | 98 |  |  | (136) |  |  | — |  |  | 90,143 |
Total available for sale securities | $ | 1,287,760 |  |  | $ | 7,696 |  |  | $ | (83,228) |  |  | $ | (138) |  |  | $ | 1,212,090 |
(1)The fair value of other securities includes student loan asset backed securities of $54.0 million and structured financial products of $36.1 million. (2)Basis adjustments represent the amount of fair value hedging adjustments included in the carrying amount of fixed-rate investment securities designated in fair value hedging arrangements. See Note 5 - Derivative Instruments for additional information regarding these derivative financial instruments.
| December 31, 2023
(dollars in thousands) | Amortized cost |  | Gross unrealized gains |  | Gross unrealized losses |  |  |  | Fair value
Investment securities available for sale |  |  |  |  |  |  |  |  |
U.S. Treasury securities | $ | 1,097 |  |  | $ | — |  |  | $ | — |  |  |  |  | $ | 1,097 |
U.S. government sponsored entities and U.S. agency securities | 74,161 |  |  | 176 |  |  | (1,765) |  |  |  |  | 72,572 |
Mortgage-backed securities - agency | 650,119 |  |  | 2,325 |  |  | (77,944) |  |  |  |  | 574,500 |
Mortgage-backed securities - non-agency | 87,019 |  |  | 414 |  |  | (3,904) |  |  |  |  | 83,529 |
State and municipal securities | 62,952 |  |  | 258 |  |  | (5,750) |  |  |  |  | 57,460 |
Corporate securities | 109,598 |  |  | 41 |  |  | (10,467) |  |  |  |  | 99,172 |
Other securities(1) | 27,646 |  |  | 3 |  |  | (84) |  |  |  |  | 27,565 |
Total available for sale securities | $ | 1,012,592 |  |  | $ | 3,217 |  |  | $ | (99,914) |  |  |  |  | $ | 915,895 |
(1)The fair value of other securities includes structured financial products of $27.6 million. The following is a summary of the amortized cost and fair value of the investment securities available for sale, by maturity, at September 30, 2024. Expected maturities may differ from contractual maturities in mortgage-backed securities because the mortgages underlying the securities may be prepaid without penalties. The maturities of all other investment securities available for sale are based on final contractual maturity.
(dollars in thousands) | Amortized cost |  | Fair value
Investment securities available for sale |  |  |
Within one year | $ | 1,032 |  |  | $ | 1,031 |
After one year through five years | 67,779 |  |  | 64,894 |
After five years through ten years | 123,284 |  |  | 114,690 |
After ten years | 111,372 |  |  | 110,785 |
Mortgage-backed securities | 984,293 |  |  | 920,690 |
Total available for sale securities | $ | 1,287,760 |  |  | $ | 1,212,090 |
Proceeds and gross realized gains and losses on sales of investment securities available for sale for the three and nine months ended September 30, 2024 and 2023 are summarized as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(dollars in thousands) | 2024 |  | 2023 |  | 2024 |  | 2023 |  |
Investment securities available for sale |  |  |  |  |  |  |  |  |
Proceeds from sales | $ | 13,049 |  |  | $ | 65,911 |  |  | $ | 58,874 |  |  | $ | 165,871 |  |  |
Gross realized gains on sales | 113 |  |  | — |  |  | 420 |  |  | 338 |  |  |
Gross realized losses on sales | (157) |  |  | (4,961) |  |  | (616) |  |  | (6,816) |  |  |
Unrealized losses and fair values for investment securities available for sale as of September 30, 2024 and December 31, 2023, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are summarized as follows:
| September 30, 2024
| Less than 12 Months |  | 12 Months or more |  | Total
(dollars in thousands) | Fair value |  | Unrealized loss |  | Fair value |  | Unrealized loss |  | Fair value |  | Unrealized loss
Investment securities available for sale |  |  |  |  |  |  |  |  |  |  |
U.S. government sponsored entities and U.S. agency securities | $ | 12,266 |  |  | $ | 43 |  |  | $ | 8,670 |  |  | $ | 1,329 |  |  | $ | 20,936 |  |  | $ | 1,372 |
Mortgage-backed securities - agency | 136,270 |  |  | 690 |  |  | 406,381 |  |  | 66,563 |  |  | 542,651 |  |  | 67,253 |
Mortgage-backed securities - non-agency | 6,580 |  |  | 66 |  |  | 18,888 |  |  | 2,696 |  |  | 25,468 |  |  | 2,762 |
State and municipal securities | 1,802 |  |  | 26 |  |  | 45,341 |  |  | 4,911 |  |  | 47,143 |  |  | 4,937 |
Corporate securities | 22,100 |  |  | 1,689 |  |  | 55,045 |  |  | 5,079 |  |  | 77,145 |  |  | 6,768 |
Other securities | 46,223 |  |  | 136 |  |  | — |  |  | — |  |  | 46,223 |  |  | 136 |
Total available for sale securities | $ | 225,241 |  |  | $ | 2,650 |  |  | $ | 534,325 |  |  | $ | 80,578 |  |  | $ | 759,566 |  |  | $ | 83,228 |
| December 31, 2023
| Less than 12 Months |  | 12 Months or more |  | Total
(dollars in thousands) | Fair value |  | Unrealized loss |  | Fair value |  | Unrealized loss |  | Fair value |  | Unrealized loss
Investment securities available for sale |  |  |  |  |  |  |  |  |  |  |
U.S. government sponsored entities and U.S. agency securities | $ | 42,826 |  |  | $ | 87 |  |  | $ | 8,323 |  |  | $ | 1,678 |  |  | $ | 51,149 |  |  | $ | 1,765 |
Mortgage-backed securities - agency | 130,106 |  |  | 7,386 |  |  | 348,476 |  |  | 70,558 |  |  | 478,582 |  |  | 77,944 |
Mortgage-backed securities - non-agency | 8,852 |  |  | 353 |  |  | 19,418 |  |  | 3,551 |  |  | 28,270 |  |  | 3,904 |
State and municipal securities | 51,497 |  |  | 5,750 |  |  | — |  |  | — |  |  | 51,497 |  |  | 5,750 |
Corporate securities | 4,688 |  |  | 53 |  |  | 84,662 |  |  | 10,414 |  |  | 89,350 |  |  | 10,467 |
Other securities | 14,763 |  |  | 84 |  |  | — |  |  | — |  |  | 14,763 |  |  | 84 |
Total available for sale securities | $ | 252,732 |  |  | $ | 13,713 |  |  | $ | 460,879 |  |  | $ | 86,201 |  |  | $ | 713,611 |  |  | $ | 99,914 |
At September 30, 2024, 240 investment securities available for sale had unrealized losses with aggregate depreciation of 9.88% from their amortized cost basis. For all of the above investment securities, the unrealized losses were generally due to changes in interest rates and other market conditions, and unrealized losses were considered to be temporary as the fair value is expected to recover as the securities approach their respective maturity dates and principal is paid back in full. The Company does not intend to sell and it is likely that the Company will not be required to sell the securities prior to their anticipated recovery.

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