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NET INVESTMENT INCOME (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Net Investment Income [Abstract]
Interest and dividend income, net of withholding taxes and other expenses	$ 6,578	$ 8,244	$ 19,880	$ 24,935
Investment income from Lloyd's syndicates	2,349	2,210	7,658	9,969
Net realized and unrealized gains (losses) on other investments (see Note 4)	(11,877)	0	(11,731)	(324)
Net investment income (loss)	(2,950)	10,454	15,807	34,580
Share of Solasglas' net income (loss) (see Note 3)	(14,404)	19,844	(483)	42,422
Total investment income (loss)	$ (17,354)	$ 30,298	$ 15,324	$ 77,002

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Investment Income, Interest and Dividend Net of Withholding Taxes

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Investment Income (Loss) From Third-Party Syndicates

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Net Investment Income (Loss)

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The net income earned from investments in securities and other investments including derivatives. It includes dividends from shares in corporations, and interest from bonds, loans, mortgages, derivatives, commercial paper, bank accounts, certificates of deposits, treasuries, and other financial securities. It also includes realized and unrealized gains and losses on all investments. Also includes income from equity method investment and equity in income of related party investment fund.

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Unrealized Gain (Loss) on Investments and Derivatives

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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