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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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