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DEBT SECURITIES - Schedule of Maturity of Debt Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Amortized Cost |  |
Due in one year or less | $ 86,812 |
Due after one year through five years | 128,399 |
Due after five years through ten years | 558,784 |
Due after ten years | 1,235,676 |
Amortized Cost | 2,009,671 | $ 2,334,630
Fair Value |  |
Due in one year or less | 85,513 |
Due after one year through five years | 123,444 |
Due after five years through ten years | 539,952 |
Due after ten years | 1,069,208 |
Fair Value | 1,818,117 | 2,087,571
Amortized Cost |  |
Due after one year through five years | 83,464 |
Due after five years through ten years | 14,678 |
Due after ten years | 740,741 |
Amortized Cost | 838,883 | 872,628
Fair Value |  |
Due after one year through five years | 80,274 |
Due after five years through ten years | 13,103 |
Due after ten years | 618,992 |
Fair Value | $ 712,369 | $ 730,397

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