v3.26.1
Investments - Summary of Investments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Net Investment Income [Line Items]    
Investment at fair value, cost $ 1,064,333 $ 1,010,488
Cumulative unrealized gains on investments 290,469 184,434
Cumulative unrealized losses on investments (66,552) (51,056)
Investments accounted for under the equity method 397,445 357,383
Total investments held at adjusted carrying value or fair value 1,685,695 1,501,249
Investments in publicly traded companies    
Net Investment Income [Line Items]    
Investment at fair value, cost 86,268 54,752
Cumulative unrealized gains on investments 50,949 44,319
Cumulative unrealized losses on investments (14,405) (4,143)
Investments at fair value 122,812 94,928
Investments in privately held entities that report NAV    
Net Investment Income [Line Items]    
Investment at fair value, cost 496,043 460,160
Cumulative unrealized gains on investments 180,952 89,514
Cumulative unrealized losses on investments (40,937) (37,298)
Investments at fair value 636,058 512,376
Investments in privately held entities that do not report NAV | Entities with observable price change    
Net Investment Income [Line Items]    
Investment at fair value, cost 91,621 82,252
Cumulative unrealized gains on investments 58,568 50,601
Cumulative unrealized losses on investments (11,210) (9,615)
Investments in privately held entities that do not report fair value, book value 138,979 123,238
Investments in privately held entities that do not report NAV | Entities without observable price changes    
Net Investment Income [Line Items]    
Investment at fair value, cost 390,401 413,324
Cumulative unrealized gains on investments 0 0
Cumulative unrealized losses on investments 0 0
Investments in privately held entities that do not report fair value, book value $ 390,401 $ 413,324