Investments - Schedule of Major Categories of the Company' s Net Investment Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Net Investment Income [Line Items]
Gross investment income	$ 87,105	$ 96,782	$ 87,077
Investment expense	(3,665)	(3,693)	(3,031)
Net investment income	83,440	93,089	84,046
Fixed maturity securities
Net Investment Income [Line Items]
Gross investment income	53,181	48,262	49,793
Bank loan participations
Net Investment Income [Line Items]
Gross investment income	12,830	16,992	11,984
Equity securities
Net Investment Income [Line Items]
Gross investment income	5,447	7,424	6,548
Other invested assets
Net Investment Income [Line Items]
Gross investment income	3,229	4,855	5,049
Cash, cash equivalents, restricted cash equivalents, and short-term investments
Net Investment Income [Line Items]
Gross investment income	$ 12,418	$ 19,249	$ 13,703