XML 28 R9.htm IDEA: XBRL DOCUMENT
v3.21.1

Consolidated Statements of Cash Flows (Parenthetical) - Implementation of ASU 2020-06 [Member] $ in Thousands | Jan. 01, 2021 USD ($)
--- | ---
Increase decrease in retained earnings | $ 616
Increase decrease in convertible notes | 4,088
Increase decrease in additional paid in capital | 3,682
Increase decrease in deferred tax liability | $ 1,022

X
- Definition Increase decrease in additional paid in capital. + References No definition available. + Details
Name: | wetf_IncreaseDecreaseInAdditionalPaidInCapital
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase decrease in convertible notes. + References No definition available. + Details
Name: | wetf_IncreaseDecreaseInConvertibleNotes
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase decrease in deferred tax liability. + References No definition available. + Details
Name: | wetf_IncreaseDecreaseInDeferredTaxLiability
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase decrease in retained earnings. + References No definition available. + Details
Name: | wetf_IncreaseDecreaseInRetainedEarnings
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=wetf_ImplementationOfAsu202006Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |