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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
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	$ 4,200,809	$ 1,725,380
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income	$ 2,346,110	$ (4,188,770)
Commodity Contract [Member]
Location of Gain (Loss) on Derivatives Recognized in Income	Realized gain (loss) on closed positions

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

Description of the type of derivative instrument identified. For example, swaps, swaptions, forwards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579240-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Description of where the net gain (loss) on foreign currency derivatives not designated as hedging instruments are reported in the statement of income or other statement of financial performance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n)(7))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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-Name Accounting Standards Codification
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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://www.xbrl.org/2003/role/presentationRef
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