DERIVATIVE INSTRUMENTS (Details) (USD $)
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3 Months Ended | 6 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | ||||||||
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Sep. 30, 2012
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Sep. 30, 2011
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Jun. 30, 2012
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2012
Interest Rate Swap [Member]
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Sep. 30, 2011
Interest Rate Swap [Member]
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Dec. 31, 2011
Interest Rate Swap [Member]
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Sep. 30, 2012
Not Designated as Hedging Instrument [Member]
Commodity Financial Contracts [Member]
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Sep. 30, 2011
Not Designated as Hedging Instrument [Member]
Commodity Financial Contracts [Member]
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Sep. 30, 2012
Not Designated as Hedging Instrument [Member]
Commodity Financial Contracts [Member]
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Sep. 30, 2011
Not Designated as Hedging Instrument [Member]
Commodity Financial Contracts [Member]
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Dec. 31, 2011
Not Designated as Hedging Instrument [Member]
Commodity Financial Contracts [Member]
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DERIVATIVE INSTRUMENTS [Abstract] | |||||||||||||
Feedstock and natural gas usage to operating expenses (in hundredths) | 82.10% | 82.50% | |||||||||||
Monthly feedstock requirements hedged, Maximum | 40.00% | 40.00% | |||||||||||
Derivatives, Fair Value [Line Items] | |||||||||||||
Unrealized gain (loss) | $ (731,000) | $ (388,000) | $ 1,446,000 | $ (307,000) | $ (837,000) | $ (388,000) | |||||||
Realized gain (loss) | (1,446,000) | (86,000) | (942,000) | 279,000 | |||||||||
Net loss | 0 | (393,000) | (1,779,000) | (109,000) | |||||||||
Fair value of financial contracts - asset (liability) | (444,000) | (444,000) | 393,000 | ||||||||||
Realized and unrealized gains (losses) as a percentage of cost of sales and processing (in hundredths) | 0.00% | 0.10% | 1.20% | 0.00% | |||||||||
Margin calls on outstanding financial contracts | 1,500,000 | 500,000 | |||||||||||
Margin calls on outstanding financial contracts refunded | 1,000,000 | ||||||||||||
Fair value of interest rate swap - liability | 978,000 | 1,134,000 | |||||||||||
Term loan in pay fixed, receive variable interest rate swap | 10,000,000 | ||||||||||||
Term loan secured by plant, pipeline and equipment | 14,000,000 | ||||||||||||
Notional amount | 6,000,000 | ||||||||||||
Derivative, variable interest rate (in hundredths) | 5.83% | ||||||||||||
Cumulative loss | (978,000) | (1,130,000) | |||||||||||
Deferred tax benefit | 333,000 | 384,000 | |||||||||||
Net cumulative loss | 103,000 | (9,000) | (645,000) | (746,000) | |||||||||
Interest expense reclassified from other comprehensive loss | 275,000 | 316,000 | |||||||||||
Cash flow hedge gain (loss) to be reclassified within twelve months | $ 316,000 |