Investments - Summary of Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Schedule of Investments [Line Items]
Investment at fair value, cost	$ 1,010,488	$ 1,207,146
Cumulative unrealized gains on investments	184,434	228,100
Cumulative unrealized losses on investments	(51,056)	(144,489)
Investments accounted for under the equity method	357,383	186,228
Total investments held at adjusted carrying value or fair value	1,501,249	1,476,985
Investments in publicly traded companies
Schedule of Investments [Line Items]
Investment at fair value, cost	54,752	188,653
Cumulative unrealized gains on investments	44,319	24,262
Cumulative unrealized losses on investments	(4,143)	(107,248)
Investment in publicly traded companies	94,928	105,667
Investments in privately held entities that report NAV
Schedule of Investments [Line Items]
Investment at fair value, cost	460,160	518,074
Cumulative unrealized gains on investments	89,514	126,077
Cumulative unrealized losses on investments	(37,298)	(34,285)
Investment in publicly traded companies	512,376	609,866
Investments in privately held entities that do not report NAV | Entities with observable price change
Schedule of Investments [Line Items]
Investment at fair value, cost	82,252	99,932
Cumulative unrealized gains on investments	50,601	77,761
Cumulative unrealized losses on investments	(9,615)	(2,956)
Investment in privately held entities that do not report fair value, book value	123,238	174,737
Investments in privately held entities that do not report NAV | Entities without observable price changes
Schedule of Investments [Line Items]
Investment at fair value, cost	413,324	400,487
Cumulative unrealized gains on investments	0	0
Cumulative unrealized losses on investments	0	0
Investment in privately held entities that do not report fair value, book value	$ 413,324	$ 400,487