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Subsequent Event	9 Months Ended
	Sep. 30, 2015
Subsequent Events [Abstract]
Subsequent Event	12. Subsequent Event On October 29, 2015, the Company entered into an agreement to acquire GreenHaven Commodity Services, LLC, the managing owner of the GreenHaven Continuous Commodity Index Fund (NYSE Arca: GCC), and GreenHaven Coal Services, LLC, the sponsor of the GreenHaven Coal Fund (NYSE Arca: TONS), from GreenHaven, LLC and GreenHaven Group LLC, respectively, for approximately $12,000 in cash. The transaction is subject to approval by the GreenHaven Continuous Commodity Index Fund shareholders and customary closing conditions, and is expected to close in the fourth quarter of 2015. The Company will retain GreenHaven Advisors, LLC as the sub-advisor to the funds to conduct portfolio management services.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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