Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Notes Tables
Notes Details

DERIVATIVE INSTRUMENTS (Details)

v3.7.0.1

DERIVATIVE INSTRUMENTS (Details) - USD ($)	3 Months Ended		9 Months Ended
DERIVATIVE INSTRUMENTS (Details) - USD ($)	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Derivative [Line Items]
Feedstock and natural gas usage to operating expenses			61.60%	70.00%
Unrealized gain			$ 89,000	$ 332,000
Realized and unrealized gains/(losses) as a percentage of cost of sales and processing	0.00%	0.00%	0.00%	0.00%
Unrealized loss	$ 5,000	$ 3,000	$ 9,000	$ 6,000
Realized loss	$ 30,000	46,000	$ 100,000	147,000
Maximum [Member]
Derivative [Line Items]
Monthly feedstock requirements hedged	40.00%		40.00%
Interest Rate Swaps [Member]
Derivative [Line Items]
Term loan in pay fixed, receive variable interest rate swap	$ 10,000,000		$ 10,000,000
Term loan secured by plant, pipeline and equipment	14,000,000		14,000,000
Notional amount	$ 2,000,000		$ 2,000,000		$ 2,750,000
Derivative, variable interest rate	5.83%		5.83%
Fair value of interest rate swap - liability	$ 88,000		$ 88,000		$ 177,000
Not Designated as Hedging Instrument [Member] \| Commodity Financial Instruments [Member]
Derivative [Line Items]
Unrealized gain	0	0	0	180,000
Realized loss	0	0	0	(180,000)
Net gain	$ 0	$ 0	$ 0	$ 0

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Feedstock and natural gas usage as a percentage of operating expenses for the period.

+ References

No definition available.

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- Definition

The monthly feedstock requirements hedged under the risk management policy.

+ References

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- Definition

The realized and unrealized gains (losses) as a percentage of cost of sales and processing.

+ References

No definition available.

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- Definition

The carrying amount of the loan in a pay fixed, receive variable interest rate swap agreement.

+ References

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
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- Definition

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

+ References

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- Definition

The portion of losses on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

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- Definition

The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13(h))
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-Paragraph 28
-Subparagraph (b)
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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.

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