Investments - Net Investment Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Other	$ 5,006	$ 4,139	$ 780
Total investment income	92,934	69,084	54,448
Less investment expenses	10,948	9,478	9,516
Net investment income	81,986	59,606	44,932
Total fixed maturities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest	69,703	56,243	48,702
Equity securities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Dividends	341	3,548	5,163
Other long-term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest	6,492	2,833	4,742
Other long-term investments | Change in Value
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Other	1,447	(2,864)	(7,930)
Mortgage loans
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest	1,852	1,889	1,897
Short-term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest	3,048	1,068	354
Cash and cash equivalents
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest	$ 5,045	$ 2,228	$ 740