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FAIR VALUE MEASUREMENTS (Details) (USD $)
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Dec. 31, 2013
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Mar. 31, 2008
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Dec. 31, 2013
Recurring [Member]
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Dec. 31, 2012
Recurring [Member]
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Dec. 31, 2013
Recurring [Member]
Level 1 [Member]
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Dec. 31, 2012
Recurring [Member]
Level 1 [Member]
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Dec. 31, 2013
Recurring [Member]
Level 2 [Member]
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Dec. 31, 2012
Recurring [Member]
Level 2 [Member]
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Dec. 31, 2013
Recurring [Member]
Level 3 [Member]
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Dec. 31, 2012
Recurring [Member]
Level 3 [Member]
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| FAIR VALUE MEASUREMENTS [Abstract] | ||||||||||
| Term loan secured by plant, pipeline and equipment | $ 14,000,000 | $ 10,000,000 | ||||||||
| Liabilities [Abstract] | ||||||||||
| Interest rate swap | 563,000 | 893,000 | 0 | 0 | 563,000 | 893,000 | 0 | 0 | ||
| Commodity financial instruments | $ 48,000 | $ 48,000 | $ 0 | $ 0 |