Summary of Investments - Net Investment Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Other	$ 152	$ 205	$ 252
Total investment income	64,852	48,127	67,395
Less investment expenses	9,074	8,457	6,981
Continuing Operations
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Net investment income	55,778	39,670	60,414
Fixed Maturities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income:	43,224	46,478	50,274
Equity securities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Dividends on equity securities	5,031	6,368	7,842
Other long-term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income:	4,481	1,890	3,115
Other long-term investments | Change in Value
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Other	9,699	(9,633)	1,114
Mortgage-backed securities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income:	1,995	1,949	1,595
Short-term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income:	18	107	522
Cash and cash equivalents
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income:	$ 252	$ 763	$ 2,681