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INVESTMENTS - Schedule of Cost or Amortized Cost and Fair Value of Securities Available for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,392,573	$ 1,353,532
Allowance for Expected Credit Losses	(829)	(1,018)	$ (566)
Gross Unrealized Gains	4,450	2,679
Gross Unrealized Losses	(71,856)	(86,114)
Fair Value	1,324,338	1,269,079
U.S. government obligations and agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	21,762	20,284
Allowance for Expected Credit Losses	0	0
Gross Unrealized Gains	125	35
Gross Unrealized Losses	(396)	(572)
Fair Value	21,491	19,747
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	943,716	920,337
Allowance for Expected Credit Losses	(711)	(894)
Gross Unrealized Gains	2,620	1,580
Gross Unrealized Losses	(43,842)	(52,075)
Fair Value	901,783	868,948
Mortgage-backed and asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	401,745	387,538
Allowance for Expected Credit Losses	0	0
Gross Unrealized Gains	1,676	1,041
Gross Unrealized Losses	(25,899)	(31,549)
Fair Value	377,522	357,030
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	15,870	15,893
Allowance for Expected Credit Losses	(1)	(3)
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,291)	(1,536)
Fair Value	14,578	14,354
Redeemable preferred stock
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,480	9,480
Allowance for Expected Credit Losses	(117)	(121)	$ (93)
Gross Unrealized Gains	29	23
Gross Unrealized Losses	(428)	(382)
Fair Value	$ 8,964	$ 9,000

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