Shares Repurchased	6 Months Ended
Jun. 30, 2018
Equity [Abstract]
Shares Repurchased	21. Shares Repurchased On October 29, 2014, the Company’s Board of Directors authorized a three-year share repurchase program of up to $100,000. On April 27, 2016, the Board of Directors approved a $60,000 increase to the Company’s share repurchase program and extended the term through April 27, 2019. Included under this program are purchases to offset future equity grants made under the Company’s equity plans and are made in open market or privately negotiated transactions. This authority may be exercised from time to time and in such amounts as market conditions warrant, and subject to regulatory considerations. The timing and actual number of shares repurchased depends on a variety of factors including price, corporate and regulatory requirements, market conditions and other corporate liquidity requirements and priorities. The repurchase program may be suspended or terminated at any time without prior notice. Shares repurchased under this program are returned to the status of authorized and unissued on the Company’s books and records. As more fully disclosed in Note 3, the Company completed the ETFS Acquisition on April 11, 2018. To partially finance the acquisition, the Company and WisdomTree International entered into a Credit Agreement which contains customary negative covenants, including, among others, a covenant which may restrict the Company’s ability to repurchase equity interests. Share repurchases only are permitted to the extent the Total Leverage Ratio (as defined in the Credit Agreement) does not exceed 1.75 to 1.00 and no event of default (as defined in the Credit Agreement) has occurred and is continuing at the time the share repurchase is made. However, the Company’s ability to purchase shares of its common stock withheld pursuant to the terms of equity awards granted to employees to satisfy tax withholding obligations is not restricted. During the three and six months ended June 30, 2018, the Company repurchased 26,717 shares and 87,225 shares of its common stock, respectively, under this program for an aggregate cost of $272 and $1,006, respectively. During the three and six months ended June 30, 2017, the Company repurchased 7,967 shares and 354,496 shares of its common stock, respectively, under this program for an aggregate cost of $65 and $3,693, respectively. As of June 30, 2018, $87,608 remains under this program for future purchases.

21. Shares Repurchased

On October 29, 2014, the Company’s Board of Directors authorized a three-year share repurchase program of up to $100,000. On April 27, 2016, the Board of Directors approved a $60,000 increase to the Company’s share repurchase program and extended the term through April 27, 2019. Included under this program are purchases to offset future equity grants made under the Company’s equity plans and are made in open market or privately negotiated transactions. This authority may be exercised from time to time and in such amounts as market conditions warrant, and subject to regulatory considerations. The timing and actual number of shares repurchased depends on a variety of factors including price, corporate and regulatory requirements, market conditions and other corporate liquidity requirements and priorities. The repurchase program may be suspended or terminated at any time without prior notice. Shares repurchased under this program are returned to the status of authorized and unissued on the Company’s books and records.

As more fully disclosed in Note 3, the Company completed the ETFS Acquisition on April 11, 2018. To partially finance the acquisition, the Company and WisdomTree International entered into a Credit Agreement which contains customary negative covenants, including, among others, a covenant which may restrict the Company’s ability to repurchase equity interests. Share repurchases only are permitted to the extent the Total Leverage Ratio (as defined in the Credit Agreement) does not exceed 1.75 to 1.00 and no event of default (as defined in the Credit Agreement) has occurred and is continuing at the time the share repurchase is made. However, the Company’s ability to purchase shares of its common stock withheld pursuant to the terms of equity awards granted to employees to satisfy tax withholding obligations is not restricted.

During the three and six months ended June 30, 2018, the Company repurchased 26,717 shares and 87,225 shares of its common stock, respectively, under this program for an aggregate cost of $272 and $1,006, respectively.

During the three and six months ended June 30, 2017, the Company repurchased 7,967 shares and 354,496 shares of its common stock, respectively, under this program for an aggregate cost of $65 and $3,693, respectively.

As of June 30, 2018, $87,608 remains under this program for future purchases.