INVESTMENTS - Net Investment Income (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net Investment Income [Line Items]
Gross investment income	$ 788,489	$ 641,838	$ 444,506
Investment expenses	(29,260)	(30,096)	(25,677)
Net investment income	759,229	611,742	418,829
Fixed maturities
Net Investment Income [Line Items]
Gross investment income	620,704	514,842	329,858
Other investments
Net Investment Income [Line Items]
Gross investment income	48,666	20,411	57,043
Equity securities
Net Investment Income [Line Items]
Gross investment income	12,922	12,088	10,390
Mortgage loans
Net Investment Income [Line Items]
Gross investment income	34,028	35,312	23,407
Cash and cash equivalents
Net Investment Income [Line Items]
Gross investment income	59,600	50,261	20,273
Short-term investments
Net Investment Income [Line Items]
Gross investment income	$ 12,569	$ 8,924	$ 3,535

The net gain or loss (both realized and unrealized) related to investments in certain entities that calculate net asset value per share and the amount after accretion (amortization) of discount (premium), of interest income and dividend income on nonoperating securities.

No definition available.

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The net gain or loss (both realized and unrealized) related to investments in certain entities that calculate net asset value per share and the amount after accretion (amortization) of discount (premium) of interest income and dividend income on nonoperating securities, net of investment expense.

+ References

No definition available.

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Amount of expenses related to the generation of investment income.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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