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Related Party Transactions - Summary of Accounts Receivable from Related Parties (Detail) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Related Party Transaction [Line Items] |  |
Accounts receivable from related parties | $ 21,222 | $ 25,628
WisdomTree Trust [Member] |  |
Related Party Transaction [Line Items] |  |
Accounts receivable from related parties | 14,618 | 15,987
Manjer Issuers [Member] |  |
Related Party Transaction [Line Items] |  |
Accounts receivable from related parties | 4,624 | 6,460
WisdomTree Multi Asset Issuer PLC And WisdomTree Issuer PLC [Member] |  |
Related Party Transaction [Line Items] |  |
Accounts receivable from related parties | $ 1,980 | $ 3,181

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