XML 97 R35.htm IDEA: XBRL DOCUMENT
v3.19.3

Significant Accounting Policies (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2019
Accounting Policies [Abstract] |
Schedule of Estimated Useful Lives of Related Assets | Depreciation is provided for using the straight-line method over the estimated useful lives of the related assets as follows:
Equipment |  | 5 years
Furniture and fixtures |  | 15 years

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

X
- Definition Schedule of estimated useful lives of related assets. + References No definition available. + Details
Name: | wetf_ScheduleOfEstimatedUsefulLivesOfRelatedAssetsTableTextBlock
Namespace Prefix: | wetf_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration