v3.26.3
Investments - Narratives (Details)
$ in Thousands
 9 Months Ended
Sep. 30, 2026
USD ($)
investment
Dec. 31, 2025
USD ($)
Net Investment Income [Line Items]    
Investments accounted for under the equity method $ 394,393 $ 357,383
Fair Value, Investments, Privately Held Entities that Calculate NAV, Unfunded Commitments $ 317,500  
Limited partnership maximum expiration terms 11 years  
Weighted-average remaining liquidation term (in years) 5 years 4 months 24 days  
Limited partnership liquidation, expected initial term (in years) 10 years  
Number of equity method investments | investment 9  
Investments in privately held entities that report NAV    
Net Investment Income [Line Items]    
Weighted-average remaining liquidation term (in years) 7 years 9 months 18 days  
Investments in privately held entities that do not report NAV | Entities with observable price change    
Net Investment Income [Line Items]    
Investment in privately held entities that do not report NAV, cumulative price adjustments $ (137,800)  
Investments in privately held entities that do not report NAV, cumulative upward price adjustment 50,600  
Investments in privately held entities that do not report NAV, cumulative downward price adjustment (10,800)  
Investments in privately held entities that do not report NAV, cumulative impairment loss $ (177,600)