Investments - Investment Income, Realized and Unrealized Gains and Losses on Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Investments [Abstract]
Investment income, net of investment expenses	$ 2,681	$ 3,574	$ 5,519	$ 7,238
Realized gains on investments	181	26	256	40
Realized losses on investments	(197)	(74)	(300)	(108)
Investment income and realized gains and losses, net of investment expenses	$ 2,665	$ 3,526	$ 5,475	$ 7,170