Contingent Payments - Additional Information (Detail) $ in Thousands, $ in Thousands			3 Months Ended		9 Months Ended
	Feb. 19, 2020 USD ($)	Feb. 19, 2020 CAD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	May 04, 2020 USD ($)	Feb. 19, 2020 CAD ($)
WisdomTree Asset Management Canada, Inc [Member]
Contingent payments			$ 0		$ 0		$ 0
Contingent payments received			0	$ 0	0	$ 0
Proceeds from divestiture of businesses	$ 2,774	$ 3,720
Additional consideration payable	$ 2,360								$ 3,000
WisdomTree Asset Management Canada, Inc [Member] | Maximum [Member]
Additional consideration payable									4,000
WisdomTree Asset Management Canada, Inc [Member] | Minimum [Member]
Additional consideration payable									$ 0
Advisor Engine [Member]
Maximum amount of contingent payments that may be received								$ 10,408
Contingent payments			0		0		$ 0
Contingent payments received			$ 0	$ 0	$ 0	$ 0
Advisor Engine [Member] | Fair Value Of Upfront Consideration Received [Member]
Fair value of upfront consideration received								$ 9,592