Investments - Schedule of Other Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Other Investments
Fair Value	$ 253,152	$ 281,001
Other Long-term Investments
Other Investments
Cost or adjusted/amortized cost	38,954	22,969
Unrealized Gain	1,106	654
Unrealized Loss	7	0
Fair Value	40,053	23,623
Limited Partnership
Other Investments
Cost or adjusted/amortized cost	5,024	2,556
Unrealized Gain	1,093	573
Unrealized Loss	0	0
Fair Value of Limited Partnership Interest	6,117	3,129
Surplus Note
Other Investments
Cost or adjusted/amortized cost	6,000
Unrealized Gain	0
Unrealized Loss	0
Fair Value	6,000
Commercial Mortgage Loans
Other Investments
Cost or adjusted/amortized cost	6,840
Unrealized Gain	0
Unrealized Loss	0
Fair Value	6,840
Short-term Investments
Other Investments
Cost or adjusted/amortized cost	21,090	20,413
Unrealized Gain	13	81
Unrealized Loss	7	0
Fair Value	$ 21,096	$ 20,494