v3.26.1
Investments - Summary of Unaudited Financial Information and Unaudited Financial Position of Limited Partnerships (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Schedule Of Equity Method Investments [Line Items]      
Total income $ 242,882 $ 216,433  
Net income 85,043 $ 74,230  
Balance sheet:      
Total assets 2,611,081   $ 2,528,928
Total liabilities $ 1,433,381   $ 1,414,284