ORGANIZATION AND BUSINESS (Additional Information) (Details)	1 Months Ended
	Nov. 30, 2009	Nov. 18, 2009 USD ($) $ / shares shares	Sep. 30, 2015 $ / shares $ / Units	Dec. 31, 2014 $ / shares	Sep. 30, 2014 $ / shares	Dec. 31, 2013 $ / shares
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets			350
Number of initially registered units on Form S-1 with the U.S. Securities and Exchange Commission	30,000,000
Net asset value per share | $ / shares		$ 50.00	$ 11.28	$ 13.69	$ 18.04	$ 18.32
Number of units issued | shares		200,000
Value of unit issued | $		$ 10,000,000
Commenced investment operations date	Nov. 18, 2009
Number of registered units			30,000,000
Creation Baskets [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of units per basket			50,000