Investments (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Summary of Investments
Equity investments at fair value		$ 134,711		$ 134,711		$ 180,958
Trading		186,158		186,158		77,996
Equity method		14		14		16
Total investments	[1]	320,883		320,883		$ 258,970
Gain (Loss) on Investments [Abstract]
Net realized gains (losses) during the period		(840)	$ (600)	(3,213)	$ (3,691)
Net unrealized gains (losses) during the period on investments still held at the end of the period		19,815	(9,456)	21,154	(6,317)
Gain (loss) from investments—net		$ 18,975	$ (10,056)	$ 17,941	$ (10,008)

[1] Amounts in parentheses represent the aggregate balances at September 30, 2024 and December 31, 2023 attributable to variable interest entities consolidated by the Company.