v3.26.1
Investments - Summary of Unaudited Financial Information and Unaudited Financial Position of Limited Partnerships (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Schedule Of Equity Method Investments [Line Items]          
Total income $ 246,653 $ 221,920 $ 489,535 $ 438,353  
Net income 82,900 $ 70,279 167,943 $ 144,509  
Balance sheet:          
Total assets 2,648,459   2,648,459   $ 2,528,928
Total liabilities $ 1,469,398   $ 1,469,398   $ 1,414,284