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Related Party Transactions - Summary of Accounts Receivable from Related Parties (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Related Party Transaction [Line Items]    
Accounts receivable from related parties $ 25,628 $ 26,884
WisdomTree Trust [Member]    
Related Party Transaction [Line Items]    
Accounts receivable from related parties 15,987 13,030
Manjer Issuers [Member]    
Related Party Transaction [Line Items]    
Accounts receivable from related parties 6,460 11,693
WisdomTree Multi Asset Issuer PLC And WisdomTree Issuer PLC [Member]    
Related Party Transaction [Line Items]    
Accounts receivable from related parties 3,181 2,125
WisdomTree Commodity Services LLC [Member]    
Related Party Transaction [Line Items]    
Accounts receivable from related parties $ 0 $ 36