Investments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Investments [Line Items]
Equity method investments	$ 38,383,000	$ 32,847,000
Gains (losses) on equity method investments	10,920,000	6,706,000	$ 5,023,000
Impairment charge on equity method investments	0	0	3,900,000
Equity method investment, amount sold	0	3,800,000	0
Investments carried under measurement alternative	192,000	192,000
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
Assets	3,074,971,000	3,342,166,000
Liabilities	2,326,244,000	2,660,090,000
Maximum Exposure to Loss	5,500,000	4,500,000
Other Nonoperating Income (Expense)
Schedule of Investments [Line Items]
Equity investments carried under measurement alternative, loss	1,800,000	100,000
Equity investments carried under measurement alternative, gain			$ 400,000
Variable Interest Entity, Primary Beneficiary
Schedule of Investments [Line Items]
Assets	9,200,000	6,800,000
Liabilities	$ 1,400,000	$ 1,300,000