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INVESTMENTS - Schedule of Amortized Cost and Fair Value of Investments With Contractual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Amortized Cost
Due in one year or less	$ 198,513
Due after one year through five years	703,944
Due after five years through ten years	462,984
Due after ten years	24,030
Perpetual maturity securities	3,102
Amortized Cost	1,392,573	$ 1,353,532
Fair Value
Due in one year or less	196,170
Due after one year through five years	682,232
Due after five years through ten years	422,970
Due after ten years	19,974
Perpetual maturity securities	2,992
Fair Value	$ 1,324,338	$ 1,269,079

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