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DEBT SECURITIES - Schedule of Maturity of Debt Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Amortized Cost |  |
Due in one year or less | $ 71,960 |
Due after one year through five years | 244,231 |
Due after five years through ten years | 418,655 |
Due after ten years | 1,599,784 |
Amortized Cost | 2,334,630 | $ 2,772,453
Fair Value |  |
Due in one year or less | 71,429 |
Due after one year through five years | 230,299 |
Due after five years through ten years | 388,864 |
Due after ten years | 1,396,979 |
Fair Value | 2,087,571 | 2,461,393
Amortized Cost |  |
Due after one year through five years | 73,943 |
Due after five years through ten years | 28,489 |
Due after ten years | 770,196 |
Amortized Cost | 872,628 | 918,312
Fair Value |  |
Due after one year through five years | 69,373 |
Due after five years through ten years | 25,824 |
Due after ten years | 635,200 |
Fair Value | $ 730,397 | $ 785,295

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