Investments - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Schedule of Investments [Line Items]
Equity method investments	$ 40,041		$ 38,122
Gains (losses) on equity method investments	1,790	$ 2,062
Investments carried under measurement alternative	192		192
Total assets	4,375,652		3,175,937
Total liabilities	3,450,781		2,277,781
Maximum Exposure to Loss	5,300		5,700
Other nonoperating income (expense)
Schedule of Investments [Line Items]
Equity investments carried under measurement alternative, gain	36,600
Equity investments carried under measurement alternative, loss		$ 1,300
Variable interest entity, primary beneficiary
Schedule of Investments [Line Items]
Total assets	8,200		9,500
Total liabilities	$ 700		$ 1,200