XML 134 R111.htm IDEA: XBRL DOCUMENT
v3.22.4

Earnings Per Shares - Schedule of Weighted Average Number of Shares (Parenthetical) (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2020 shares
Earnings Per Share [Abstract] |
Participating Securities | 15,122
Potentially Dilutive common stock equivalents | 6

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Potentially Dilutive Common Stock Equivalents. + References No definition available. + Details
Name: | wetf_PotentiallyDilutiveCommonStockEquivalents
Namespace Prefix: | wetf_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Participating Securities + References No definition available. + Details
Name: | wetf_WeightedAverageDilutedSharesExcludingParticipatingSecurities
Namespace Prefix: | wetf_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration