Investments (Net Investment Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Net Investment Income
Investment fees and expenses	$ (2,036)	$ (2,285)	$ (6,189)	$ (6,481)
Net investment income	40,442	37,272	116,326	107,727
Fixed maturities
Net Investment Income
Interest and dividend income, operating	37,199	34,092	108,826	99,150
Equities
Net Investment Income
Interest and dividend income, operating	1,027	1,197	3,142	3,253
Short-term investments, including Other
Net Investment Income
Interest and dividend income, operating	3,325	3,167	8,381	9,718
BOLI
Net Investment Income
BOLI	$ 927	$ 1,101	$ 2,166	$ 2,087