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RESERVE FOR LOSSES AND LOSS EXPENSES - Prior Year Reserve Development (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Liability for Claims and Claims Adjustment Expense [Line Items]
Prior year favorable (adverse) adjustments	$ (411,882)	$ 25,533	$ 32,410
Insurance
Liability for Claims and Claims Adjustment Expense [Line Items]
Prior year favorable (adverse) adjustments	(176,353)	16,350	18,360
Reinsurance
Liability for Claims and Claims Adjustment Expense [Line Items]
Prior year favorable (adverse) adjustments	$ (235,529)	$ 9,183	$ 14,049

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- Definition

Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred in prior reporting periods and related claims settlement costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-3

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