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Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Nov. 30, 2020	Dec. 31, 2022	Nov. 30, 2022	Dec. 31, 2021	Apr. 11, 2018
Indefinite-lived Intangible Assets [Line Items]
Goodwill		$ 85,856		$ 85,856
Intangible asset related to its customary advisory agreement		603,567		$ 601,247
Accumulated Amortization		$ (50)
Software Development [Member]
Indefinite-lived Intangible Assets [Line Items]
Finite lived intangible assets useful lives		3 years
Accumulated Amortization		$ 50
Finite lived intangible assets remaining useful lives		2 years 10 months 24 days
Acquisition of ETFS Business [Member]
Indefinite-lived Intangible Assets [Line Items]
Goodwill					$ 84,057
Intangible asset related to its customary advisory agreement			$ 0		$ 601,247
Weighted average cost of capital percentage	11.00%
Acquisition of ETFS Business [Member] | Minimum [Member]
Indefinite-lived Intangible Assets [Line Items]
Revenue growth multiple	3.00%
Acquisition of ETFS Business [Member] | Maximum [Member]
Indefinite-lived Intangible Assets [Line Items]
Revenue growth multiple	8.00%
Acquisition of ETFS Business [Member] | Weighted Average [Member]
Indefinite-lived Intangible Assets [Line Items]
Revenue growth multiple	5.00%
Series of Individually Immaterial Business Acquisitions [Member]
Indefinite-lived Intangible Assets [Line Items]
Acquisition completion date		Apr. 11, 2018

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