WisdomTree (WT) 10-Q 10 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 31, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Trading Symbol	WETF
Entity Registrant Name	WisdomTree Investments, Inc.
Entity Central Index Key	880,631
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		138,038,503

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 189,272	$ 165,284
Accounts receivable	28,652	18,176
Deferred tax asset, net	6,560	3,872
Other current assets	3,543	1,708
Total current assets	228,027	189,040
Fixed assets, net	10,274	10,356
Investments	21,247	13,990
Deferred tax asset, net	3,519	5,618
Goodwill	1,676	1,676
Other noncurrent assets	463	71
Total assets	265,206	220,751
Current liabilities:
Fund management and administration payable	13,263	9,983
Compensation and benefits payable	21,725	14,333
Accounts payable and other liabilities	5,368	5,115
Total current liabilities	40,356	29,431
Acquisition payable	2,278	1,757
Deferred rent payable	5,183	5,278
Total liabilities	$ 47,817	$ 36,466
Stockholders' equity:
Preferred stock, par value $0.01; 2,000 shares authorized
Common stock, par value $0.01; 250,000 shares authorized; issued: 137,770 and 134,959; outstanding: 136,313 and 133,445	$ 1,377	$ 1,350
Additional paid-in capital	227,975	209,216
Accumulated other comprehensive loss	(175)	(53)
Accumulated deficit	(11,788)	(26,228)
Total stockholders' equity	217,389	184,285
Total liabilities and stockholders' equity	$ 265,206	$ 220,751

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	137,770,000	134,959,000
Common stock, shares outstanding	136,313,000	133,445,000

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Advisory fees	$ 81,320	$ 43,938	$ 141,189	$ 86,547
Other income	239	190	511	501
Total revenues	81,559	44,128	141,700	87,048
Expenses:
Compensation and benefits	18,669	7,551	38,270	16,906
Fund management and administration	11,208	7,818	21,376	16,986
Marketing and advertising	3,628	2,726	6,704	5,304
Sales and business development	2,076	1,727	3,976	3,028
Professional and consulting fees	1,604	1,840	3,067	3,635
Occupancy, communications and equipment	943	853	1,861	1,753
Depreciation and amortization	223	201	443	393
Third party sharing arrangements	497	115	780	125
Acquisition contingent payment	264		521
Other	1,509	1,164	2,744	2,306
Total expenses	40,621	23,995	79,742	50,436
Income before taxes	40,938	20,133	61,958	36,612
Income tax expense/(benefit)	16,766	9,531	25,724	(4,194)
Net income	$ 24,172	$ 10,602	$ 36,234	$ 40,806
Net income per share-basic	$ 0.18	$ 0.08	$ 0.27	$ 0.31
Net income per share-diluted	$ 0.18	$ 0.08	$ 0.26	$ 0.29
Weighted-average common shares-basic	135,895	131,533	134,990	131,235
Weighted-average common shares-diluted	137,951	138,258	137,620	138,501
Cash dividends declared per common share	$ 0.08		$ 0.16

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Comprehensive income
Net income	$ 24,172	$ 10,602	$ 36,234	$ 40,806
Other comprehensive loss
Foreign currency translation adjustment	(69)		(122)
Comprehensive income	$ 24,103	$ 10,602	$ 36,112	$ 40,806

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 36,234	$ 40,806
Non-cash items included in net income:
Income tax expense/(benefit)	25,218	(4,194)
Depreciation and amortization	443	393
Stock-based compensation	4,952	4,045
Deferred rent	(70)	1,286
Accretion to interest income and other	6	(79)
Changes in operating assets and liabilities:
Accounts receivable	(10,318)	2,546
Other assets	(2,279)	(1,230)
Deferred acquisition contingent payment	521
Fund management and administration payable	3,219	(473)
Compensation and benefits payable	7,290	(9,887)
Accounts payable and other liabilities	316	(553)
Net cash provided by operating activities	65,532	32,660
Cash flows from investing activities:
Purchase of fixed assets	(364)	(3,741)
Purchase of investments	(8,449)	(1,237)
Cash acquired on acquisition		1,349
Proceeds from the redemption of investments	1,187	803
Net cash used in investing activities	(7,626)	(2,826)
Cash flows from financing activities:
Dividends paid	(21,794)
Shares repurchased	(15,264)	(5,426)
Proceeds from exercise of stock options	3,293	116
Net cash used in financing activities	(33,765)	(5,310)
(Decrease)/increase in cash flow due to changes in foreign exchange rate	(153)	7
Net increase in cash and cash equivalents	23,988	24,531
Cash and cash equivalents-beginning of period	165,284	104,316
Cash and cash equivalents-end of period	189,272	128,847
Supplemental disclosure of cash flow information:
Cash paid for taxes	$ 356	$ 21

Organization and Description of

Organization and Description of Business	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Organization and Description of Business	1. Organization and Description of Business WisdomTree Investments, Inc., through its subsidiaries in the U.S., U.K., Jersey and Ireland (collectively, “WisdomTree” or the “Company”), is an ETP sponsor and asset manager headquartered in New York. WisdomTree offers ETPs covering equity, fixed income, currency, alternative and commodity asset classes. The Company has the following operating subsidiaries: • WisdomTree Asset Management, Inc. • Boost Management Limited • WisdomTree Europe Limited • WisdomTree Management Limited • WisdomTree Japan K. K. 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. The Boost ETPs are issued by BI. BI, a non-consolidated third party, is a public limited company organized in Ireland. The WisdomTree UCITS ETFs are issued by WTI. WTI, a non-consolidated third party, is a public limited company organized in Ireland. The Board of Trustees and Board of Directors of WTT, BI and WTI, respectively, are separate from the Board of Directors of the Company. The Trustees and Directors of WTT, BI and WTI respectively, are primarily responsible for overseeing the management and affairs of the WisdomTree ETFs, Boost ETPs and the WisdomTree UCITS ETFs for the benefit of the WisdomTree ETF, Boost ETP and the WisdomTree UCITS ETF shareholders, respectively, and have contracted with the Company to provide for general management and administration services. The Company, in turn, has contracted with third parties to provide the majority of these administration services. In addition, certain officers of the Company provide general management services for WTT, BI and WTI.

Significant Accounting Policies

Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Significant Accounting Policies	2. Significant Accounting Policies Basis of Presentation These consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) and in the opinion of management reflect all adjustments, consisting of only normal recurring adjustments, necessary for a fair statement of financial condition, results of operations, and cash flows for the periods presented. The consolidated financial statements include the accounts of the Company’s wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Certain accounts in the prior years’ consolidated financial statements have been reclassified to conform to the current year’s consolidated financial statements presentation. These reclassifications had no effect on the previously reported operating results. Foreign Currency Translation Assets and liabilities of subsidiaries whose functional currency is not the U.S. dollar are translated based on the end of period exchange rates from local currency to U.S. dollars. Results of operations are translated at the average exchange rates in effect during the period. Use of Estimates The preparation of the Company’s consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the balance sheet dates and the reported amounts of revenues and expenses for the periods presented. Actual results could differ materially from those estimates. Revenue Recognition The Company earns investment advisory fees as well as licensing fees from third parties. Advisory fees are based on a percentage of the ETPs’ average daily net assets and recognized over the period the related service is provided. Licensing fees are based on a percentage of the average monthly net assets and recognized over the period the related service is provided. Depreciation and Amortization 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 Leasehold improvements are amortized over the term of their respective leases or service lives of the improvements, whichever is shorter. Fixed assets are stated at cost less accumulated depreciation and amortization. Marketing and Advertising Advertising costs, including media advertising and production costs, are expensed when incurred. Cash and Cash Equivalents The Company considers all highly liquid investments with an original maturity of 90 days or less at the time of purchase to be classified as cash equivalents. Cash and cash equivalents are held primarily with one large financial institution. Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable are customer and other obligations due under normal trade terms. An allowance for doubtful accounts is not provided since, in the opinion of management, all accounts receivable recorded are deemed collectible. Impairment of Long-Lived Assets On a periodic basis, the Company performs a review for the impairment of long-lived assets when events or changes in circumstances indicate that the estimated undiscounted future cash flows expected to be generated by the assets are less than their carrying amounts or when other events occur which may indicate that the carrying amount of an asset may not be recoverable. Earnings per Share Basic earnings per share is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted earnings per share reflects the reduction in earnings per share assuming options or other contracts to issue common stock were exercised or converted into common stock. Investments The Company accounts for all of its investments as held-to-maturity, which are recorded at amortized cost. For held-to-maturity investments, the Company has the intent and ability to hold investments to maturity and it is not more-likely-than-not that the Company will be required to sell the investments before recovery of their amortized cost bases, which may be maturity. On a periodic basis, the Company reviews its portfolio of investments for impairment. If a decline in fair value is deemed to be other-than-temporary, the security is written down to its fair value through earnings. Goodwill Goodwill is the excess of the fair value of the purchase price over the fair values of the identifiable net assets at the acquisition date. The Company tests its goodwill for impairment at least annually. An impairment loss is triggered if the estimated fair value of the operating reporting unit is less than the estimated net book value. Such loss is calculated as the difference between the estimated fair value of goodwill and its carrying value. Stock-Based Awards Accounting for stock-based compensation requires the measurement and recognition of compensation expense for all equity awards based on estimated fair values. The Company accounts for stock-based compensation for its employees based on the cost of employee services received in exchange for a stock-based award. Stock-based compensation is measured based on the grant-date fair value of the award and is amortized over the relevant service period. Income Taxes The Company accounts for income taxes using the liability method, which requires the determination of deferred tax assets and liabilities based on the differences between the financial and tax basis of assets and liabilities using the enacted tax rates in effect for the year in which differences are expected to reverse. Deferred tax assets are adjusted by a valuation allowance if, based on the weight of available evidence, it is more-likely-than-not that some portion or all of the deferred tax assets will not be realized. In order to recognize and measure any unrecognized tax benefits, management evaluates and determines whether any of its tax positions are more-likely-than-not to be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. Once it is determined that a position meets this recognition threshold, the position is measured to determine the amount of benefit to be recognized in the consolidated financial statements. The Company records interest expense and penalties related to tax expenses as income tax expense. Related Party Transactions The Company’s revenues are derived primarily from investment advisory agreements with WTT and WisdomTree ETFs. Under these agreements, 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. The Trustees are primarily responsible for overseeing the management and affairs of the WisdomTree ETFs and the Trust for the benefit of the WisdomTree ETF shareholders and WTT has contracted with the Company to provide for general management and administration of WTT and the WisdomTree ETFs. The Company is also responsible for certain expenses of WTT, including the cost of transfer agency, custody, fund administration and accounting, legal, audit, and other non-distribution services, excluding extraordinary expenses, taxes and certain other expenses. In exchange, the Company receives fees based on a percentage of the ETF average daily net assets. The advisory agreements may be terminated by WTT upon notice. Certain officers of the Company also provide general management oversight of WTT; however, these officers have no material decision making responsibilities and primarily implement the decisions of the Trustees. At June 30, 2015 and December 31, 2014, the balance of accounts receivable from WTT was approximately $27,127 and $17,288, respectively, which is included as a component of accounts receivable on the Company’s Consolidated Balance Sheets. Revenue from advisory services provided to WTT for the three months ended June 30, 2015 and 2014 was approximately $80,409 and $43,753, respectively, and for the six months ended June 30, 2015 and 2014 was approximately $139,755 and $86,362, respectively. At June 30, 2015 and December 31, 2014, the balance of accounts receivable from BI and WTI was approximately $722 and $157, respectively, which is included as a component of accounts receivable on the Company’s Consolidated Balance Sheets. Revenue from advisory fee services provided to BI and WTI for the three months ended June 30, 2015 and 2014 was approximately $911 and $185, respectively, and for the six months ended June 30, 2015 and 2014 was approximately $1,434 and $185, respectively. Third-Party Sharing Arrangements The Company pays a percentage of its advisory fee revenue based on incremental growth in AUM, subject to caps or minimums, to marketing agents to sell WisdomTree ETFs and for including WisdomTree ETFs on third party customer platforms. Segment, Geographic and Customer Information The Company operates as a single business segment as an ETP sponsor and asset manager providing investment advisory services. Substantially all of the Company’s revenues, pretax income and assets are derived or located in the U.S. The Company maintains operations in Europe through its acquisition of Boost, now known as WisdomTree Europe (Note 11). Recently Issued Accounting Pronouncements In February 2015, the FASB issued Accounting Standards Update 2015-02 (ASU 2015-02) Amendments to the Consolidation Analysis In May 2014, the FASB issued Accounting Standards Update 2014-09 (ASU 2014-09) Revenue from Contracts with Customers Business Combinations The Company includes the results of operations of the businesses that it acquires from the respective dates of acquisition. The fair values of the purchase price of the acquisitions are allocated to the assets acquired and liabilities assumed based on their estimated fair values. The excess of the fair value of purchase price over the fair values of these identifiable assets and liabilities is recorded as goodwill. Subsequent Events The Company has evaluated subsequent events after the date of the consolidated financial statements to consider whether or not the impact of such events needed to be reflected or disclosed in the consolidated financial statements. Such evaluation was performed through the issuance date of the consolidated financial statements.

Investments and Fair Value Meas

Investments and Fair Value Measurements	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Investments and Fair Value Measurements	3. Investments and Fair Value Measurements The following table is a summary of the Company’s investments: June 30, 2015 December 31, 2014 Held-to- Held-to- Federal agency debt instruments $ 21,247 $ 13,990 The following table summarizes unrealized gains, losses and fair value of investments: June 30, 2015 December 31, 2014 Held-to- Held-to- Cost/amortized cost $ 21,247 $ 13,990 Gross unrealized gains 83 112 Gross unrealized losses (573 ) (386 ) Fair value $ 20,757 $ 13,716 The following table sets forth the maturity profile of investments; however these investments may be called prior to maturity date: June 30, 2015 December 31, 2014 Held-to- Held-to- Due within one year $ — $ — Due one year through five years 9,376 1,409 Due five years through ten years 825 350 Due over ten years 11,046 12,231 Total $ 21,247 $ 13,990 Fair Value Measurement Under the accounting for fair value measurements and disclosures, fair value is defined as the price that would be received to sell an asset or paid to transfer a liability, or the exit price, in an orderly transaction between market participants at the measurement date. The accounting guidance establishes a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. These three types of inputs create the following fair value hierarchy: Level 1 Level 2 Level 3 This hierarchy requires the use of observable market data when available. The Company’s held-to-maturity securities are categorized as Level 1. The majority of the Company’s acquisition payable of $2,278 is measured at fair value and is categorized as Level 3. Fair value is determined based on a predefined formula which includes observable and unobservable inputs and is subject in part to a minimum payout. Inputs to the predefined formula include the contractual minimum payment obligation, European AUM, the Company’s enterprise value over global AUM, and profitability of the European business (Note 11). During the three and six months ended June 30, 2015, the Company recorded an acquisition contingent payment expense of $264 and $521, respectively, which represents the expense accrual for expected payments due to the former Boost shareholders primarily driven by increased AUM from the Company’s European business. Some of the Company’s financial instruments are not measured at fair value on a recurring basis but are recorded at amounts that approximate fair value due to their liquid or short-term nature.

Fixed Assets

Fixed Assets	6 Months Ended
	Jun. 30, 2015
Property, Plant and Equipment [Abstract]
Fixed Assets	4. Fixed Assets The following table summarizes fixed assets: June 30, 2015 December 31, 2014 Equipment $ 1,004 $ 913 Furniture and fixtures 1,789 1,620 Leasehold improvements 8,896 8,795 Less accumulated depreciation and amortization (1,415 ) (972 ) Total $ 10,274 $ 10,356

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	5. Commitments and Contingencies Contractual Obligations The Company has entered into obligations under operating leases with initial non-cancelable terms in excess of one year for office space, telephone and data services. Expenses recorded under these agreements for the three months ended June 30, 2015 and 2014 were approximately $829 and $768, and for the six months ended June 30, 2015 and 2014 were approximately $1,623 and $1,594. Future minimum lease payments with respect to non-cancelable operating leases at June 30, 2015 are approximately as follows: Remainder of 2015 $ 1,938 2016 3,645 2017 3,389 2018 and thereafter 33,082 Total $ 42,054 The Company’s prior U.S. office lease expired in January 2014. In August 2013, the Company entered into a new 16 year lease agreement. Pursuant to the new lease agreement, the Company received lease incentives which include a deferred rent period and a leasehold improvement allowance equal to $3,223. At that time, the Company recorded a receivable of $3,223 due from the lessor of its new office space related to its leasehold improvement allowance. The balance at June 30, 2015 and December 31, 2014 was $509, which was included in accounts receivable on the Company’s Consolidated Balance Sheets. In May 2015, the Company entered into a new three-year lease agreement for office space in Japan. Pursuant to the new lease agreement, the Company received a lease incentive of a deferred rent period equal to ¥10,440, or $85. In July 2015, the Company entered into a new five-year lease agreement for office space in the U.K. Pursuant to the new lease agreement, the Company received a lease incentive of a deferred rent period equal to £26, or $41. Letter of Credit The Company collateralized its U.S. office lease through a standby letter of credit totaling $1,384. The collateral is included in investments on the Company’s Consolidated Balance Sheets. Contingencies The Company is subject to various routine reviews and inspections by regulatory authorities as well as legal proceedings arising in the ordinary course of business. The Company is not currently party to any litigation or other legal proceedings that are expected to have a material impact on its business, financial position or results of operations.

Stock-Based Awards

Stock-Based Awards	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Awards	6. Stock-Based Awards The Company grants equity awards to employees and directors. Options are issued for terms of ten years and vest between two to four years. Options are issued with an exercise price equal to the fair value of the Company on the date of grant. The Company estimated the fair value for options using the Black-Scholes option pricing model. All restricted stock and option awards require future service as a condition of vesting with certain awards subject to acceleration under certain conditions. Restricted stock awards generally vest over three years. A summary of options and restricted stock activity is as follows: Options Weighted Restricted Balance at January 1, 2015 5,330,070 $ 1.61 1,513,939 Granted — $ — 598,244 Exercised/vested (3,052,358 ) $ 1.08 (650,331 ) Forfeitures — $ — (4,523 ) Balance at June 30, 2015 2,277,712 $ 2.32 1,457,329 A summary of stock-based compensation expense is as follows: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 $ 2,608 $ 2,030 $ 4,952 $ 4,045 A summary of unrecognized stock-based compensation expense and average remaining vesting period is as follows: June 30, 2015 Unrecognized Stock-Based Average Employees and directors option awards $ 206 0.50 Employees and directors restricted stock awards $ 16,651 1.73

Employee Benefit Plans

Employee Benefit Plans	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	7. Employee Benefit Plans The Company has a 401(k) savings plan covering all eligible employees in which the Company can make discretionary contributions from its profits. A summary of the Company made discretionary contributions is as follows: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 $ 106 $ 108 $ 497 $ 393

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Share	8. Earnings Per Share The following is a reconciliation of the basic and diluted earnings per share computation: Three Months Ended Six Months Ended 2015 2014 2015 2014 (shares in thousands) (shares in thousands) Net income $ 24,172 $ 10,602 $ 36,234 $ 40,806 Shares of common stock and common stock equivalents: Weighted averages shares used in basic computation 135,895 131,533 134,990 131,235 Dilutive effect of stock options and unvested restricted stock 2,056 6,725 2,630 7,266 Weighted averages shares used in dilutive computation 137,951 138,258 137,620 138,501 Basic earnings per share $ 0.18 $ 0.08 $ 0.27 $ 0.31 Dilutive earnings per share $ 0.18 $ 0.08 $ 0.26 $ 0.29 Diluted earnings per share reflects the reduction in earnings per share assuming options or other contracts to issue common stock were exercised or converted into common stock under the treasury stock method. The dilutive effect of options to purchase shares of common stock and restricted shares were included in the diluted earnings per share in the three and six months ended June 30, 2015, and 2014, respectively. 84 and 585 restricted shares were determined to be anti-dilutive and were not included in the calculation of diluted earnings per share for the three months ended June 30, 2015 and 2014, respectively. 548 and 986 restricted shares were determined to be anti-dilutive and were not included in the calculation of diluted earnings per share for the six months ended June 30, 2015 and 2014, respectively.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	9. Income Taxes Net operating losses – U.S. The Company has generated net operating losses in the U.S. (“NOLs”). The following table summarizes the activity for NOLs for the six months ended June 30, 2015: December 31, 2014 $ (109,839 ) U.S. GAAP pretax income 65,548 State income taxes (506 ) Income tax differences: Temporary 2,583 Permanent (58,207 ) June 30, 2015 $ (100,421 ) During the first quarter of 2014, management determined that although realization is not assured, it believed that it is more likely than not that its gross deferred tax asset would be realized. Therefore, it released the valuation allowance previously recorded, resulting in an income tax benefit of $13,725 on the Company’s Consolidated Statements of Operations and Comprehensive Income in the three months ended March 31, 2014 and a corresponding deferred tax asset on the Company’s Consolidated Balance Sheets at March 31, 2014. The balance of the deferred tax asset at June 30, 2015 and December 31, 2014 was $10,079 and $9,490, respectively. At June 30, 2015 and December 31, 2014, $92,214 and $101,108 of the NOLs were generated from stock-based compensation amounts recognized for tax purposes at the time options are exercised (at the intrinsic value) or restricted stock is vested (at fair value of the share price) in excess of amounts previously expensed at the date of grant for U.S. GAAP purposes. These amounts cannot be recognized as a deferred tax asset under U.S. GAAP. In addition, $3,487 of the NOLs are deemed worthless. Therefore, at June 30, 2015, the Company has no recognized deferred tax assets related to these NOLs. During the three and six months ended June 30, 2015, the Company recognized tax expense of $16,766 and $25,724. During the six months ended June 30, 2015, the Company’s deferred tax asset increased by $589 and the Company recorded a credit to additional paid-in capital of $25,807 for the amount of NOLs from stock-based compensation utilized to reduce taxes payable during the period. In addition, during the three and six months ended June 30, 2015, the Company recorded $156 and $506 of state income taxes. During the three and six months ended June 30, 2014, the Company recognized a tax expense of $9,531 and a tax benefit of $4,194. During the six months ended June 30, 2014, the Company utilized $4,238 of its deferred tax asset and recorded a credit to additional paid-in capital of $5,293 for the amount of NOLs from stock-based compensation utilized to reduce taxes payable during the period. In the third quarter of 2014, the Company completed a state tax study which resulted in a reduction of its current baseline operating tax rate in the U.S. from 45% to approximately 38%. The Company reduced the carrying value of its deferred tax asset which had previously been recorded using the higher rate. A summary of the components of the gross and tax affected deferred tax asset as of June 30, 2015 is as follows: Stock-based compensation $ 9,124 Deferred rent liability 5,557 NOLs 4,720 Accrued expenses 20,645 Incentive compensation (8,884 ) Fixed assets (5,119 ) Other 217 Total deferred components 26,260 Income tax rate 38.38 % Tax affected $ 10,079 Net operating losses – Non-U.S. The Company’s foreign subsidiaries generated net operating losses outside the U.S. The following table summarizes the activity for NOLs for the six months ended June 30, 2015: December 31, 2014 $ (4,061 ) Foreign subsidiaries loss (3,095 ) June 30, 2015 $ (7,156 ) At June 30, 2015 and December 31, 2014, a deferred tax asset related to these NOLs has been fully offset by a valuation allowance of $1,423 and $816, respectively.

Shares Repurchased

Shares Repurchased	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Shares Repurchased	10. Shares Repurchased On October 29, 2014, the Company’s Board of Directors authorized a three-year share repurchase program of up to $100 million. During the three months ended June 30, 2015, the Company repurchased 62 shares of its common stock under this program for an aggregate cost of $1,194. During the six months ended June 30, 2015, the Company repurchased 835 shares of its common stock under this program for an aggregate cost of $15,264. Of these shares, 259 were repurchased to offset tax withholding obligations that occur upon vesting and release of restricted shares for an aggregate cost of $4,385, and 576 shares were repurchased in the open market to offset new shares issued in connection with employee equity grants for an aggregate cost of $10,879. $84,736 remains under this program for future purchases. During the three and six months ended June 30, 2014, the Company repurchased 312 shares of its common stock to offset tax withholding obligations that occur upon vesting and release of restricted shares for an aggregate cost of $5,426.

Acquisition and Goodwill

Acquisition and Goodwill	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Acquisition and Goodwill	11. Acquisition and Goodwill On April 15, 2014, the Company completed its acquisition of Boost, a U.K. and Jersey based ETP sponsor, now known as WisdomTree Europe, as part of the Company’s strategy to expand internationally. Under the terms of the agreement, the Company owns 75% of WisdomTree Europe and the former Boost shareholders own 25%. The Company will acquire the remaining 25% ownership interest on or about March 31, 2018 using a predefined formula based on the 180-day average of European AUM at December 31, 2017 and will be tied to the Company’s enterprise value over the 180-day average of global AUM at December 31, 2017, and affected by profitability of the European business. No consideration was transferred on the acquisition date. The ultimate payout will be made in cash over two years. Two shareholders of Boost, who owned 88% of Boost prior to the acquisition, became co-CEOs of WisdomTree Europe and are guaranteed a minimum payment of $1,757 for their interest if they terminate their employment without good reason or they are terminated for cause. The Company determined that this minimum payment represents consideration transferred and was recognized and measured at acquisition-date fair value to determine the purchase price. Any future payments made to the co-CEOs in excess of the minimum payments is accounted for separately from the business combination as acquisition contingent payment on the Company’s Consolidated Statements of Operations and Comprehensive Income and represents compensation for post-acquisition services. The obligation to mandatorily redeem the remaining 12% minority shareholders’ interest in Boost is measured at the fair value of the amount of cash that would be paid under the conditions specified in the agreement. Any change in the carrying amount of the liability will be recognized as an expense. During the three and six months ended June 30, 2015, the Company incurred $110 and $116 of compensation expense and $154 and $405 of interest expense, which represents contingent consideration due to the co-CEOs and non-employee shareholders, respectively. These amounts have both been recorded in acquisition contingent payment on the Company’s Consolidated Statements of Operations and Comprehensive Income. Because the Company is required to redeem the shares from the former Boost shareholders on or about March 31, 2018 using a predefined formula, under U.S. GAAP, the Company does not reflect the 25% interest held by the former Boost shareholders in WisdomTree Europe as non-controlling interest. The Company recorded goodwill of $1,676 in connection with this acquisition. Goodwill represents the excess value of the purchase price over the $81 fair value of the net assets acquired, consisting primarily of accounts receivable, accounts payable and fixed assets. While the Company paid no consideration up front to the former Boost shareholders, under the terms of the acquisition agreement, $1,757 was deemed to represent the purchase price. Goodwill is not expected to be tax deductible. The following table summarizes the goodwill activity for the six months ended June 30, 2015: Balance at January 1, 2015 $ 1,676 Goodwill acquired during the period — Balance at June 30, 2015 $ 1,676

Significant Accounting Polici18

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation These consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) and in the opinion of management reflect all adjustments, consisting of only normal recurring adjustments, necessary for a fair statement of financial condition, results of operations, and cash flows for the periods presented. The consolidated financial statements include the accounts of the Company’s wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Certain accounts in the prior years’ consolidated financial statements have been reclassified to conform to the current year’s consolidated financial statements presentation. These reclassifications had no effect on the previously reported operating results.
Foreign Currency Translation	Foreign Currency Translation Assets and liabilities of subsidiaries whose functional currency is not the U.S. dollar are translated based on the end of period exchange rates from local currency to U.S. dollars. Results of operations are translated at the average exchange rates in effect during the period.
Use of Estimates	Use of Estimates The preparation of the Company’s consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the balance sheet dates and the reported amounts of revenues and expenses for the periods presented. Actual results could differ materially from those estimates.
Revenue Recognition	Revenue Recognition The Company earns investment advisory fees as well as licensing fees from third parties. Advisory fees are based on a percentage of the ETPs’ average daily net assets and recognized over the period the related service is provided. Licensing fees are based on a percentage of the average monthly net assets and recognized over the period the related service is provided.
Depreciation and Amortization	Depreciation and Amortization 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 Leasehold improvements are amortized over the term of their respective leases or service lives of the improvements, whichever is shorter. Fixed assets are stated at cost less accumulated depreciation and amortization.
Marketing and Advertising	Marketing and Advertising Advertising costs, including media advertising and production costs, are expensed when incurred.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly liquid investments with an original maturity of 90 days or less at the time of purchase to be classified as cash equivalents. Cash and cash equivalents are held primarily with one large financial institution.
Accounts Receivable and Allowance for Doubtful Accounts	Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable are customer and other obligations due under normal trade terms. An allowance for doubtful accounts is not provided since, in the opinion of management, all accounts receivable recorded are deemed collectible.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets On a periodic basis, the Company performs a review for the impairment of long-lived assets when events or changes in circumstances indicate that the estimated undiscounted future cash flows expected to be generated by the assets are less than their carrying amounts or when other events occur which may indicate that the carrying amount of an asset may not be recoverable
Earnings per Share	Earnings per Share Basic earnings per share is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted earnings per share reflects the reduction in earnings per share assuming options or other contracts to issue common stock were exercised or converted into common stock.
Investments	Investments The Company accounts for all of its investments as held-to-maturity, which are recorded at amortized cost. For held-to-maturity investments, the Company has the intent and ability to hold investments to maturity and it is not more-likely-than-not that the Company will be required to sell the investments before recovery of their amortized cost bases, which may be maturity. On a periodic basis, the Company reviews its portfolio of investments for impairment. If a decline in fair value is deemed to be other-than-temporary, the security is written down to its fair value through earnings.
Goodwill	Goodwill Goodwill is the excess of the fair value of the purchase price over the fair values of the identifiable net assets at the acquisition date. The Company tests its goodwill for impairment at least annually. An impairment loss is triggered if the estimated fair value of the operating reporting unit is less than the estimated net book value. Such loss is calculated as the difference between the estimated fair value of goodwill and its carrying value.
Stock-Based Awards	Stock-Based Awards Accounting for stock-based compensation requires the measurement and recognition of compensation expense for all equity awards based on estimated fair values. The Company accounts for stock-based compensation for its employees based on the cost of employee services received in exchange for a stock-based award. Stock-based compensation is measured based on the grant-date fair value of the award and is amortized over the relevant service period.
Income Taxes	Income Taxes The Company accounts for income taxes using the liability method, which requires the determination of deferred tax assets and liabilities based on the differences between the financial and tax basis of assets and liabilities using the enacted tax rates in effect for the year in which differences are expected to reverse. Deferred tax assets are adjusted by a valuation allowance if, based on the weight of available evidence, it is more-likely-than-not that some portion or all of the deferred tax assets will not be realized. In order to recognize and measure any unrecognized tax benefits, management evaluates and determines whether any of its tax positions are more-likely-than-not to be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. Once it is determined that a position meets this recognition threshold, the position is measured to determine the amount of benefit to be recognized in the consolidated financial statements. The Company records interest expense and penalties related to tax expenses as income tax expense.
Related Party Transactions	Related Party Transactions The Company’s revenues are derived primarily from investment advisory agreements with WTT and WisdomTree ETFs. Under these agreements, 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. The Trustees are primarily responsible for overseeing the management and affairs of the WisdomTree ETFs and the Trust for the benefit of the WisdomTree ETF shareholders and WTT has contracted with the Company to provide for general management and administration of WTT and the WisdomTree ETFs. The Company is also responsible for certain expenses of WTT, including the cost of transfer agency, custody, fund administration and accounting, legal, audit, and other non-distribution services, excluding extraordinary expenses, taxes and certain other expenses. In exchange, the Company receives fees based on a percentage of the ETF average daily net assets. The advisory agreements may be terminated by WTT upon notice. Certain officers of the Company also provide general management oversight of WTT; however, these officers have no material decision making responsibilities and primarily implement the decisions of the Trustees. At June 30, 2015 and December 31, 2014, the balance of accounts receivable from WTT was approximately $27,127 and $17,288, respectively, which is included as a component of accounts receivable on the Company’s Consolidated Balance Sheets. Revenue from advisory services provided to WTT for the three months ended June 30, 2015 and 2014 was approximately $80,409 and $43,753, respectively, and for the six months ended June 30, 2015 and 2014 was approximately $139,755 and $86,362, respectively. At June 30, 2015 and December 31, 2014, the balance of accounts receivable from BI and WTI was approximately $722 and $157, respectively, which is included as a component of accounts receivable on the Company’s Consolidated Balance Sheets. Revenue from advisory fee services provided to BI and WTI for the three months ended June 30, 2015 and 2014 was approximately $911 and $185, respectively, and for the six months ended June 30, 2015 and 2014 was approximately $1,434 and $185, respectively.
Third-Party Sharing Arrangements	Third-Party Sharing Arrangements The Company pays a percentage of its advisory fee revenue based on incremental growth in AUM, subject to caps or minimums, to marketing agents to sell WisdomTree ETFs and for including WisdomTree ETFs on third party customer platforms.
Segment, Geographic and Customer Information	Segment, Geographic and Customer Information The Company operates as a single business segment as an ETP sponsor and asset manager providing investment advisory services. Substantially all of the Company’s revenues, pretax income and assets are derived or located in the U.S. The Company maintains operations in Europe through its acquisition of Boost, now known as WisdomTree Europe (Note 11).
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In February 2015, the FASB issued Accounting Standards Update 2015-02 (ASU 2015-02) Amendments to the Consolidation Analysis In May 2014, the FASB issued Accounting Standards Update 2014-09 (ASU 2014-09) Revenue from Contracts with Customers
Business Combinations	Business Combinations The Company includes the results of operations of the businesses that it acquires from the respective dates of acquisition. The fair values of the purchase price of the acquisitions are allocated to the assets acquired and liabilities assumed based on their estimated fair values. The excess of the fair value of purchase price over the fair values of these identifiable assets and liabilities is recorded as goodwill.
Subsequent Events	Subsequent Events The Company has evaluated subsequent events after the date of the consolidated financial statements to consider whether or not the impact of such events needed to be reflected or disclosed in the consolidated financial statements. Such evaluation was performed through the issuance date of the consolidated financial statements.

Significant Accounting Polici19

Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2015
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

Investments and Fair Value Me20

Investments and Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2015
Text Block [Abstract]
Schedule of Investments	The following table is a summary of the Company’s investments: June 30, 2015 December 31, 2014 Held-to- Held-to- Federal agency debt instruments $ 21,247 $ 13,990
Schedule of Unrealized Gains, Losses and Fair Value of Investments	The following table summarizes unrealized gains, losses and fair value of investments: June 30, 2015 December 31, 2014 Held-to- Held-to- Cost/amortized cost $ 21,247 $ 13,990 Gross unrealized gains 83 112 Gross unrealized losses (573 ) (386 ) Fair value $ 20,757 $ 13,716
Schedule of Maturity Profile of Investments	The following table sets forth the maturity profile of investments; however these investments may be called prior to maturity date: June 30, 2015 December 31, 2014 Held-to- Held-to- Due within one year $ — $ — Due one year through five years 9,376 1,409 Due five years through ten years 825 350 Due over ten years 11,046 12,231 Total $ 21,247 $ 13,990

Fixed Assets (Tables)

Fixed Assets (Tables)	6 Months Ended
	Jun. 30, 2015
Property, Plant and Equipment [Abstract]
Schedule of Fixed Assets	The following table summarizes fixed assets: June 30, 2015 December 31, 2014 Equipment $ 1,004 $ 913 Furniture and fixtures 1,789 1,620 Leasehold improvements 8,896 8,795 Less accumulated depreciation and amortization (1,415 ) (972 ) Total $ 10,274 $ 10,356

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Lease Payments	Future minimum lease payments with respect to non-cancelable operating leases at June 30, 2015 are approximately as follows: Remainder of 2015 $ 1,938 2016 3,645 2017 3,389 2018 and thereafter 33,082 Total $ 42,054

Stock-Based Awards (Tables)

Stock-Based Awards (Tables)	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Options and Restricted Stock Activity	A summary of options and restricted stock activity is as follows: Options Weighted Restricted Balance at January 1, 2015 5,330,070 $ 1.61 1,513,939 Granted — $ — 598,244 Exercised/vested (3,052,358 ) $ 1.08 (650,331 ) Forfeitures — $ — (4,523 ) Balance at June 30, 2015 2,277,712 $ 2.32 1,457,329
Summary of Stock-Based Compensation Expense	A summary of stock-based compensation expense is as follows: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 $ 2,608 $ 2,030 $ 4,952 $ 4,045
Summary of Unrecognized Stock-Based Compensation Expense and Average Remaining Vesting Period	A summary of unrecognized stock-based compensation expense and average remaining vesting period is as follows: June 30, 2015 Unrecognized Stock-Based Average Employees and directors option awards $ 206 0.50 Employees and directors restricted stock awards $ 16,651 1.73

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Summary of Discretionary Contributions	A summary of the Company made discretionary contributions is as follows: Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 $ 106 $ 108 $ 497 $ 393

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Reconciliation of Basic and Diluted Earnings Per Share	The following is a reconciliation of the basic and diluted earnings per share computation: Three Months Ended Six Months Ended 2015 2014 2015 2014 (shares in thousands) (shares in thousands) Net income $ 24,172 $ 10,602 $ 36,234 $ 40,806 Shares of common stock and common stock equivalents: Weighted averages shares used in basic computation 135,895 131,533 134,990 131,235 Dilutive effect of stock options and unvested restricted stock 2,056 6,725 2,630 7,266 Weighted averages shares used in dilutive computation 137,951 138,258 137,620 138,501 Basic earnings per share $ 0.18 $ 0.08 $ 0.27 $ 0.31 Dilutive earnings per share $ 0.18 $ 0.08 $ 0.26 $ 0.29

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2015
Schedule of Net Operating Losses	The Company has generated net operating losses in the U.S. (“NOLs”). The following table summarizes the activity for NOLs for the six months ended June 30, 2015: December 31, 2014 $ (109,839 ) U.S. GAAP pretax income 65,548 State income taxes (506 ) Income tax differences: Temporary 2,583 Permanent (58,207 ) June 30, 2015 $ (100,421 )
Summary of Gross and Tax Affected Deferred Tax Asset Recorded	A summary of the components of the gross and tax affected deferred tax asset as of June 30, 2015 is as follows: Stock-based compensation $ 9,124 Deferred rent liability 5,557 NOLs 4,720 Accrued expenses 20,645 Incentive compensation (8,884 ) Fixed assets (5,119 ) Other 217 Total deferred components 26,260 Income tax rate 38.38 % Tax affected $ 10,079
Foreign Subsidiaries [Member]
Schedule of Net Operating Losses	The following table summarizes the activity for NOLs for the six months ended June 30, 2015: December 31, 2014 $ (4,061 ) Foreign subsidiaries loss (3,095 ) June 30, 2015 $ (7,156 )

Acquisition and Goodwill (Table

Acquisition and Goodwill (Tables)	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Summary of Goodwill Activity	The following table summarizes the goodwill activity for the six months ended June 30, 2015: Balance at January 1, 2015 $ 1,676 Goodwill acquired during the period — Balance at June 30, 2015 $ 1,676

Significant Accounting Polici28

Significant Accounting Policies - Schedule of Estimated Useful Lives of Related Assets (Detail)	6 Months Ended
	Jun. 30, 2015
Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	15 years

Significant Accounting Polici29

Significant Accounting Policies - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)Financial_Institution	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)Financial_InstitutionSegment	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Related Party Transaction [Line Items]
Cash and cash equivalents maturity period, maximum			90 days
Number of financial institutions | Financial_Institution	1		1
ETF advisory fee revenue	$ 81,320	$ 43,938	$ 141,189	$ 86,547
Number of operating segments | Segment			1
Boost Issuer PLC [Member]
Related Party Transaction [Line Items]
Accounts receivable related-party	722		$ 722		$ 157
ETF advisory fee revenue	911	185	1,434	185
Wisdom Tree Issuer Plc [Member]
Related Party Transaction [Line Items]
Accounts receivable related-party	722		722		157
ETF advisory fee revenue	911	185	1,434	185
WisdomTree Trust [Member]
Related Party Transaction [Line Items]
Accounts receivable related-party	27,127		27,127		$ 17,288
ETF advisory fee revenue	$ 80,409	$ 43,753	$ 139,755	$ 86,362

Investments and Fair Value Me30

Investments and Fair Value Measurements - Schedule of Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity debt instruments	$ 21,247	$ 13,990
Federal Agency [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-Maturity debt instruments	$ 21,247	$ 13,990

Investments and Fair Value Me31

Investments and Fair Value Measurements - Schedule of Unrealized Gains, Losses and Fair Value of Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Held-to-maturity cost or amortized cost	$ 21,247	$ 13,990
Held-to-maturity gross unrealized gains	83	112
Held-to-maturity gross unrealized losses	(573)	(386)
Held-to-maturity fair value	$ 20,757	$ 13,716

Investments and Fair Value Me32

Investments and Fair Value Measurements - Schedule of Maturity Profile of Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Held-to-maturity due within one year	$ 0	$ 0
Held-to-maturity due one year through five years	9,376	1,409
Held-to-maturity due five years through ten years	825	350
Held-to-maturity due over ten years	11,046	12,231
Held-to-maturity cost or amortized cost	$ 21,247	$ 13,990

Investments and Fair Value Me33

Investments and Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]
Acquisition payable	$ 2,278	$ 2,278	$ 1,757
Acquisition contingent payment	264	521
Level 3 [Member]
Schedule of Held-to-maturity Securities [Line Items]
Acquisition payable	2,278	2,278
Boost Shareholders [Member]
Schedule of Held-to-maturity Securities [Line Items]
Acquisition contingent payment	$ 264	$ 521

Fixed Assets - Schedule of Fixe

Fixed Assets - Schedule of Fixed Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Less accumulated depreciation and amortization	$ (1,415)	$ (972)
Total	10,274	10,356
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	1,004	913
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	1,789	1,620
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 8,896	$ 8,795

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) ¥ in Thousands, £ in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jul. 31, 2015GBP (£)	Jul. 31, 2015USD ($)	May. 31, 2015USD ($)	May. 31, 2015JPY (¥)	Dec. 31, 2014USD ($)	Aug. 31, 2013USD ($)
Loss Contingencies [Line Items]
Operating leases expenses	$ 829	$ 768	$ 1,623	$ 1,594
Period in which U.S. office lease expires				Jan. 1, 2014
New lease agreement term				16 years
New lease agreement date				2013-08
Lease incentives received including for deferred rent period										$ 3,223
Leasehold improvement allowance	$ 509		509						$ 509	$ 3,223
Stand by letter of credit decreased			$ 1,384
Japan [Member]
Loss Contingencies [Line Items]
New lease agreement term			3 years
New lease agreement date			2015-05
Lease incentives received including for deferred rent period							$ 85	¥ 10,440
U.K. [Member]
Loss Contingencies [Line Items]
New lease agreement term			5 years
New lease agreement date			2015-07
U.K. [Member] | Subsequent Events [Member]
Loss Contingencies [Line Items]
Lease incentives received including for deferred rent period					£ 26	$ 41

Commitments and Contingencies36

Commitments and Contingencies - Schedule of Future Minimum Lease Payments (Detail) $ in Thousands	Jun. 30, 2015USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remainder of 2015	$ 1,938
2,016	3,645
2,017	3,389
2018 and thereafter	33,082
Total	$ 42,054

Stock-Based Awards - Additional

Stock-Based Awards - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option issuance period	10 years
Option issued period	Options are issued for terms of ten years
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vested period	3 years
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vested period	2 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vested period	4 years

Stock-Based Awards - Summary of

Stock-Based Awards - Summary of Options and Restricted Stock Activity (Detail) - 6 months ended Jun. 30, 2015 - $ / shares	Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, beginning balance	5,330,070
Options, Granted	0
Options, Exercised/vested	(3,052,358)
Options, Forfeitures	0
Options, ending balance	2,277,712
Weighted Average Exercise Price of Options, beginning balance	$ 1.61
Weighted Average Exercise Price of Options, Granted	0
Weighted Average Exercise Price of Options, Exercised/vested	1.08
Weighted Average Exercise Price of Options, Forfeitures	0
Weighted Average Exercise Price of Options, ending balance	$ 2.32
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Awards, beginning balance	1,513,939
Restricted Stock Awards, Granted	598,244
Restricted Stock Awards, Exercised/vested	(650,331)
Restricted Stock Awards, Forfeitures	(4,523)
Restricted Stock Awards, ending balance	1,457,329

Stock-Based Awards - Summary 39

Stock-Based Awards - Summary of Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Stock-based compensation expense	$ 2,608	$ 2,030	$ 4,952	$ 4,045

Stock-Based Awards - Summary 40

Stock-Based Awards - Summary of Unrecognized Stock-Based Compensation Expense and Average Remaining Vesting Period (Detail) - Jun. 30, 2015 - USD ($) $ in Thousands	Total
Employees and Directors Option Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Stock-Based Compensation	$ 206
Average Remaining Vesting Period	6 months
Employees and Directors Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Stock-Based Compensation	$ 16,651
Average Remaining Vesting Period	1 year 8 months 23 days

Employee Benefit Plans - Summar

Employee Benefit Plans - Summary of Discretionary Contributions (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]
Discretionary contributions	$ 106	$ 108	$ 497	$ 393

Earnings Per Share - Reconcilia

Earnings Per Share - Reconciliation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Net income	$ 24,172	$ 10,602	$ 36,234	$ 40,806
Shares of common stock and common stock equivalents:
Weighted averages shares used in basic computation	135,895	131,533	134,990	131,235
Dilutive effect of stock options and unvested restricted stock	2,056	6,725	2,630	7,266
Weighted averages shares used in dilutive computation	137,951	138,258	137,620	138,501
Basic earnings per share	$ 0.18	$ 0.08	$ 0.27	$ 0.31
Dilutive earnings per share	$ 0.18	$ 0.08	$ 0.26	$ 0.29

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Anti-dilutive excluded from calculation of diluted earnings per share	84	585	548	986

Income Taxes - Schedule of Net

Income Taxes - Schedule of Net Operating Losses for Tax Purpose (Detail) - Jun. 30, 2015 - USD ($) $ in Thousands	Total	Total
Income Tax Disclosure [Abstract]
December 31, 2014		$ (109,839)
U.S. GAAP pretax income		65,548
State income taxes	$ (156)	(506)
Income tax differences:
Temporary		2,583
Permanent		(58,207)
June 30, 2015	$ (100,421)	$ (100,421)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Mar. 31, 2014
Schedule Of Income Tax [Line Items]
Valuation allowance resulting in income tax benefit	$ 3,519,000			$ 3,519,000		$ 5,618,000	$ 13,725,000
Net deferred tax assets	10,079,000			10,079,000		9,490,000
Unrecognized stock-based compensation	92,214,000			92,214,000		101,108,000
NOLs deemed worthless				3,487,000
Deferred tax asset related to NOLs	0			0
Income tax expense/(benefit)	16,766,000		$ 9,531,000	25,724,000	$ (4,194,000)
Gross deferred tax asset	589,000		$ 4,238,000	589,000	4,238,000
Credit to additional paid-in capital for the amount of NOLs from stock-based compensation				25,807,000	$ 5,293,000
State income taxes	156,000			$ 506,000
Income tax rate		38.00%		38.38%
Foreign Subsidiaries [Member]
Schedule Of Income Tax [Line Items]
Deferred tax asset offset by a valuation allowance	$ 1,423,000			$ 1,423,000		$ 816,000
Previously Reported [Member]
Schedule Of Income Tax [Line Items]
Income tax rate		45.00%

Income Taxes - Summary of Gross

Income Taxes - Summary of Gross and Tax Affected Deferred Tax Asset Recorded (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2014	Jun. 30, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Stock-based compensation		$ 9,124
Deferred rent liability		5,557
NOLs		4,720
Accrued expenses		20,645
Incentive compensation		(8,884)
Fixed assets		(5,119)
Other		217
Total deferred components		$ 26,260
Income tax rate	38.00%	38.38%
Tax affected		$ 10,079	$ 9,490

Income Taxes - Schedule of Ne47

Income Taxes - Schedule of Net Operating Losses for Tax Purpose - Non-U.S. (Detail) $ in Thousands	Jun. 30, 2015USD ($)
Foreign Subsidiaries [Member]
Operating Loss Carryforwards [Line Items]
Foreign subsidiaries loss	$ (3,095)

Shares Repurchased - Additional

Shares Repurchased - Additional Information (Detail) - Three-Year Share Repurchase Program [Member] - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Mar. 31, 2014	Jun. 30, 2015	Oct. 29, 2014
Common stock purchase authorized amount				$ 100,000,000
Repurchased common stock, shares	62		835
Repurchased common stock, value	$ 1,194,000		$ 15,264,000
Repurchased shares, remaining for future purchases	$ 84,736,000		$ 84,736,000
Tax Withholding Obligations [Member]
Repurchased common stock, shares		312	259
Repurchased common stock, value		$ 5,426,000	$ 4,385,000
Employee Equity Grants [Member]
Repurchased common stock, shares			576,000
Repurchased common stock, value			$ 10,879,000

Acquisition and Goodwill - Addi

Acquisition and Goodwill - Additional Information (Detail)	Apr. 15, 2014USD ($)	Jun. 30, 2015USD ($)Shareholder	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)Shareholder	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Business Acquisition [Line Items]
Remaining acquiree ownership percentage	25.00%
Acquisition ownership percentage				88.00%
Stock-based compensation expense		$ 2,608,000	$ 2,030,000	$ 4,952,000	$ 4,045,000
Goodwill		1,676,000		1,676,000		$ 1,676,000
Chief Executive Officer [Member]
Business Acquisition [Line Items]
Stock-based compensation expense		110,000		116,000
Non-Employee Shareholders [Member]
Business Acquisition [Line Items]
Interest expense		154,000		$ 405,000
WisdomTree Europe [Member]
Business Acquisition [Line Items]
Acquisition ownership percentage	75.00%
Business acquisition consideration transferred	$ 0
Payout description				The ultimate payout will be made in cash over two years.
Payout period	2 years
WisdomTree Europe [Member] | Chief Executive Officer [Member]
Business Acquisition [Line Items]
Guaranteed minimum payment		$ 1,757,000		$ 1,757,000
Boost Shareholders [Member]
Business Acquisition [Line Items]
Number of shareholders | Shareholder		2		2
Percentage of minority shareholder's		12.00%		12.00%
Redeemable noncontrolling interest, ownership percentage by noncontrolling owners		25.00%		25.00%
Goodwill		$ 1,676,000		$ 1,676,000
Purchase price		1,757,000		1,757,000
Boost Shareholders [Member] | Fair Value [Member]
Business Acquisition [Line Items]
Fair value of net assets acquired		$ 81,000		$ 81,000

Acquisition and Goodwill - Summ

Acquisition and Goodwill - Summary of Goodwill Activity (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2015USD ($)
Business Combination, Goodwill [Abstract]
Beginning balance	$ 1,676
Goodwill acquired during the period	0
Ending balance	$ 1,676

Uncategorized Items - wetf-2015

Label	Element	Value
Foreign Subsidiaries [Member]
Deferred Tax Assets, Operating Loss Carryforwards	us-gaap_DeferredTaxAssetsOperatingLossCarryforwards	$ 4,061
Deferred Tax Assets, Operating Loss Carryforwards	us-gaap_DeferredTaxAssetsOperatingLossCarryforwards	$ 7,156