Investments - Investment Income, Realized and Unrealized Gains and Losses on Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Investments [Abstract]
Investment income, net of investment expenses	$ 3,645	$ 2,515	$ 10,884	$ 4,618
Realized gains on investments	172	61	213	72
Realized losses on investments	(30)	(91)	(140)	(198)
Investment income and realized gains, net of investment expenses	$ 3,787	$ 2,485	$ 10,957	$ 4,492