XML 156 R81.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

AdvisorEngine - Financial Interests carrying value of the Company's financial interests (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Total carrying amount - Assets | $ 36,284 | $ 53,722
Total, Impairment | 30,138 |
Advisor Engine [Member] |  |
Unsecured convertible note, Gross Carrying Value | 2,126 |
Unsecured non-convertible note, Gross Carrying Value | 31,184 |
Preferred stock, Gross Carrying Value | 25,000 |
Total gross carrying amount - Assets | 58,310 |
Total carrying amount - Assets | 28,172 | 53,722
Unsecured non-convertible note, Impairment | (5,138) |
Preferred stock, Impairment | (25,000) |
Total, Impairment | (30,138) |
Unsecured convertible note, Net Carrying Value | 2,126 |
Unsecured non-convertible note, Net Carrying Value | 26,046 | 28,722
Preferred stock, Net Carrying Value | $ 0 | 25,000
Total, Net Carrying Value |  | $ 53,722

X
- Definition Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=118582676&loc=d3e5728-111685 + Details
Name: | us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount of the liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=118582676&loc=d3e5728-111685 + Details
Name: | us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nonconsolidated, carrying amount, note receivable - Convertible. + References No definition available. + Details
Name: | wetf_VariableInterestEntityNonConsolidatedCarryingAmountNoteReceivableConvertible
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Nonconsolidated, carrying amount, preferred stock. + References No definition available. + Details
Name: | wetf_VariableInterestEntityNonConsolidatedCarryingAmountPreferredStock
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Impairment of AdvisorEngine financial interests + References No definition available. + Details
Name: | wetf_VariableInterestEntityNonconsolidatedCarryingAmountAssetsImpairment
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Nonconsolidated Carrying Amount PreferredStock Gross Carrying Value. + References No definition available. + Details
Name: | wetf_VariableInterestEntityNonconsolidatedCarryingAmountPreferredstockGrossCarryingValue
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Impairment on AdvisorEngine preferred stock + References No definition available. + Details
Name: | wetf_VariableInterestEntityNonconsolidatedCarryingAmountPreferredstockImpairment
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Variable interest entity nonconsolidated gross carrying amount assets. + References No definition available. + Details
Name: | wetf_VariableInterestEntityNonconsolidatedGrossCarryingAmountAssets
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Nonconsolidated Unsecured Convertible Notes Carrying Value. + References No definition available. + Details
Name: | wetf_VariableInterestEntityNonconsolidatedUnsecuredConvertibleNotesCarryingValue
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Nonconsolidated Unsecured Non Convertible Notes Carrying Value. + References No definition available. + Details
Name: | wetf_VariableInterestEntityNonconsolidatedUnsecuredNonConvertibleNotesCarryingValue
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Impairment of advisor engine unsecured non-convertible note. + References No definition available. + Details
Name: | wetf_VariableInterestEntityNonconsolidatedUnsecuredNonConvertibleNotesImpairment
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Nonconsolidated, carrying amount, note receivable - unsecured. + References No definition available. + Details
Name: | wetf_VariableinterestEntityNonConsolidatedCarryingAmountNoteReceivableUnsecured
Namespace Prefix: | wetf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=wetf_AdvisorEngineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |