v3.26.3
Investments - Summary of Unrealized Gains and Losses in Consolidated Statements of Income (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Gain (Loss) on Securities [Line Items]        
Net unrealized investment (losses) gains $ (1,185) $ 1,214 $ (2,140) $ 488
Equity Securities [Member]        
Gain (Loss) on Securities [Line Items]        
Net (losses) gains recognized (989) 1,799 (235) 2,361
Exclude: Net realized gains recognized for securities sold $ 196 $ 585 $ 1,905 $ 1,873