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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) - USD ($) | 9 Months Ended
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Sep. 30, 2018 | Sep. 30, 2017
Derivatives not Accounted for as Hedging Instruments | Futures - Commodity Contracts |
Location of Gain (Loss) on Derivatives Recognized in Income | Change in unrealized gain (loss) on open positions |
Realized Gain (Loss) on Derivatives Recognized in Income | $ 22,736,110 | $ (1,973,510)
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income | $ 278,490 | $ 73,620
Commodity Contract [Member] |  |
Location of Gain (Loss) on Derivatives Recognized in Income | Realized gain (loss) on closed positions |

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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