v3.26.3
Investments - Investment Income (Loss) Summarized (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Schedule Of Investments [Line Items]        
Net income loss from limited partnership interests     $ (122) $ (709)
Real estate investments $ 825 $ 547 1,353 1,320
Net Investment Income 21,669 17,529 57,860 47,725
Available-for-Sale-Fixed-Maturity Securities [Member]        
Schedule Of Investments [Line Items]        
Investment income 12,967 7,139 31,058 21,494
Equity Securities [Member]        
Schedule Of Investments [Line Items]        
Investment income 736 675 2,140 1,822
Investment Expense [Member]        
Schedule Of Investments [Line Items]        
Investment expense (151) (164) (560) (503)
Limited Partnership Investment [Member]        
Schedule Of Investments [Line Items]        
Net income loss from limited partnership interests 277 (51) (122) (709)
Cash and Cash Equivalents [Member]        
Schedule Of Investments [Line Items]        
Investment income 6,883 9,362 23,599 24,280
Other [Member]        
Schedule Of Investments [Line Items]        
Investment income $ 132 $ 21 $ 392 $ 21