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Investments - Schedule of 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
Investment Income, Net [Abstract]
Investment income	$ 27,127	$ 22,772	$ 76,425	$ 63,423
Investment expenses	(354)	(298)	(1,017)	(825)
Net investment income	26,773	22,474	75,408	62,598
Cash and Cash Equivalents
Investment Income, Net [Abstract]
Investment income	$ 900	$ 1,300	$ 2,900	$ 4,200

X

- Definition

Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.

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