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Related Party Transactions - Summary of Accounts Receivable from Related Parties (Detail) - Related Party [Member] - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Accounts receivable from related parties	$ 32,642	$ 24,139
WisdomTree Trust [Member]
Related Party Transaction [Line Items]
Accounts receivable from related parties	17,821	16,399
Manjer Issuers [Member]
Related Party Transaction [Line Items]
Accounts receivable from related parties	12,204	4,485
Wisdomtree Multi Asset Issuer plc And Wisdomtree issuer icav [Member]
Related Party Transaction [Line Items]
Accounts receivable from related parties	$ 2,617	$ 3,255

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