Investments - Components of Net Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Components of net investment income
Interest on fixed maturity securities	$ 10,831	$ 12,101	$ 34,933	$ 35,805
Dividends on equity securities	1,487	1,562	4,634	4,656
Equity in earnings of other invested assets	644	1,425	3,701	3,705
Interest on other assets	86	69	247	134
Total Investment Income	13,048	15,157	43,515	44,300
Investment expenses	838	1,152	2,574	2,805
Net investment income	$ 12,210	$ 14,005	$ 40,941	$ 41,495