XML 114 R95.htm IDEA: XBRL DOCUMENT
v3.20.2

Related Party Transactions - Summary of Revenues from Advisory Services Provided to Related Parties (Detail) - Advisory Services [Member] - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Related Party Transaction [Line Items] |  |  |  |
Revenues from advisory services | $ 57,208 | $ 65,627 | $ 120,158 | $ 130,467
WisdomTree Trust [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues from advisory services | 31,389 | 42,817 | 70,990 | 85,040
Manjer Issuers [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues from advisory services | 23,670 | 19,367 | 43,928 | 38,640
WisdomTree Multi Asset Issuer PLC And WisdomTree Issuer PLC [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues from advisory services | 2,014 | 2,583 | 4,542 | 5,087
WisdomTree Asset Management Canada, Inc [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues from advisory services |  | 607 | 365 | 1,153
WisdomTree Commodity Services LLC [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenues from advisory services | $ 135 | $ 253 | $ 333 | $ 547

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=120401555&loc=SL114874292-224272 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_RevenueFromRelatedParties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=wetf_AdvisoryServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=wetf_WisdomTreeTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=wetf_WisdomtreeManagementJerseyLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=wetf_WisdomtreeMultiAssetIssuerPlcAndWisdomtreeIssuerPlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=wetf_WisdomtreeAssetManagementCanadaIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=wetf_WisdomtreeCommodityServicesLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |