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FAIR VALUE OF FINANCIAL INSTRUMENTS (Fair Value of Derivative Instruments) (Details) - USD ($) | Jun. 30, 2017 | Dec. 31, 2016
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Commodity Contracts [Member] | Futures - Commodity Contracts [Member] | Assets [Member] |  |
Fair Value of Financial Instruments [Line Items] |  |
Derivatives not Accounted for as Hedging Instruments | $ 5,291,350 | $ 37,435,507

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- Definition Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
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