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Organization and Description of Business | 6 Months Ended
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Jun. 30, 2018
Accounting Policies [Abstract] |
Organization and Description of Business | 1. Organization and Description of Business WisdomTree Investments, Inc., through its global subsidiaries (collectively, “WisdomTree” or the “Company”), is an exchange traded product (“ETP”) sponsor and asset manager headquartered in New York. WisdomTree offers ETPs covering equity, fixed income, currencies, commodities and alternative strategies. The Company has the following wholly-owned operating subsidiaries:
| • |  | WisdomTree Asset Management, Inc. is a New York based investment adviser registered with the SEC providing investment advisory and other management services to the WisdomTree Trust (“WTT”) and WisdomTree exchange traded funds (“ETFs”). The WisdomTree ETFs are issued in the U.S. by WTT. WTT, a non-consolidated third party, is a Delaware statutory trust registered with the SEC as an open-end management investment company. The Company has licensed to WTT the use of certain of its own indexes on an exclusive basis for the WisdomTree ETFs in the U.S.
| • |  | ETFS Management Company (Jersey) Limited (“ManJer”) is a Jersey based management company providing investment and other management services to nine issuers (the “ETFS Issuers”) and the ETPs issued and listed by the ETFS Issuers covering commodity, currency and short-and-leveraged strategies.
| • |  | Boost Management Limited (“BML”) is a Jersey based management company providing investment and other management services to Boost Issuer PLC (“BI”) and Boost ETPs. The Boost ETPs are issued by BI. BI, a non-consolidated third party, is a public limited company domiciled in Ireland.
| • |  | WisdomTree Management Limited (“WML”) is an Ireland based management company providing investment and other management services to WisdomTree Issuer plc (“WTI”) and WisdomTree UCITS ETFs. The WisdomTree UCITS ETFs are issued by WTI. WTI, a non-consolidated third party, is a public limited company domiciled in Ireland.
| • |  | WisdomTree UK Limited is a U.K. based company registered with the Financial Conduct Authority currently providing management and other services to ManJer, BML and WML.
| • |  | WisdomTree Europe Limited is a U.K. based company registered with the Financial Conduct Authority currently providing management and other services to ManJer, BML and WML.
| • |  | WisdomTree Japan Inc. (“WTJ”) is a Japan based company registered with Japan’s Ministry of Finance that serves the institutional market selling U.S. listed WisdomTree ETFs in Japan. In July 2018, the Company determined to restructure its distribution strategy in Japan. As a result, the Company will close WTJ and anticipates expanding its existing relationship with a third party to manage distribution of WisdomTree ETFs in Japan.
| • |  | WisdomTree Commodity Services, LLC (“WTCS”) is a New York based company that serves as the managing owner and commodity pool operator of the WisdomTree Continuous Commodity Index Fund. WTCS is registered with the Commodity Futures Trading Commission and is a member of the National Futures Association.
| • |  | WisdomTree Asset Management Canada, Inc. (“WTAMC”) is a Canada based investment fund manager registered with the Ontario Securities Commission providing fund management services to locally-listed WisdomTree Canadian ETFs.
Acquisition of ETFS On April 11, 2018, the Company acquired the European exchange-traded commodity, currency and short-and-leveraged business (“ETFS”) of ETFS Capital Limited (“ETFS Capital”, formerly known as ETF Securities Limited). This acquisition is referred to throughout the consolidated financial statements as the ETFS Acquisition. See Note 3 for additional information.

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- Definition The entire disclosure for the business description and basis of presentation concepts. Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -URI http://asc.fasb.org/topic&trid=2122149 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI http://asc.fasb.org/topic&trid=2134479 + Details
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