Investments - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Investments [Line Items]
Equity method investments	$ 32,847	$ 37,659
Gains (losses) on equity method investments	6,706	5,023	$ 4,115
Impairment charge on equity method investments	0	3,900	0
Equity method investment, amount sold	3,800	0	0
Investments carried under measurement alternative	192	349
Equity investments carried under measurement alternative, loss	0	0	0
Equity investments carried under measurement alternative, gain	0	0	0
Impairments related to investments	0	0	0
Total assets	3,342,166	3,953,242
Total liabilities	2,660,090	3,121,271
Maximum Exposure to Loss	4,500	4,800
Other Nonoperating Income (Expense)
Schedule of Investments [Line Items]
Investments carried under measurement alternative		400
Equity investments carried under measurement alternative, loss	100	400
Equity investments carried under measurement alternative, gain			$ 18,200
Variable Interest Entity, Primary Beneficiary
Schedule of Investments [Line Items]
Total assets	6,800	7,200
Total liabilities	$ 1,300	$ 1,000