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REINSURANCE - Reinsurance Arrangements (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Insurance [Abstract]
Direct premiums written	$ 470,900								$ 2,069,692	$ 1,921,833	$ 1,845,786
Ceded premiums written									(653,193)	(577,020)	(672,508)
Net premiums written									1,416,499	1,344,813	1,173,278
Direct premiums earned									1,999,805	1,875,129	1,759,701
Ceded premiums earned									(626,732)	(623,193)	(631,075)
Premiums earned, net	$ 348,354	$ 345,736	$ 344,958	$ 334,025	$ 335,398	$ 331,040	$ 303,274	$ 282,224	1,373,073	1,251,936	1,128,626
Direct Losses and Loss Adjustment Expenses									1,785,133	1,046,854	1,972,541
Ceded Losses and Loss Adjustment Expenses									(697,767)	(54,218)	(1,034,142)
Net Losses and Loss Adjustment Expenses									$ 1,087,366	$ 992,636	$ 938,399