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ACQUISITIONS AND DISPOSITIONS Narrative 2 (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||
| Proceeds from sale or disposition of assets | $ 2,086 | $ 2,610 | $ 29,680 |
| Gain (loss) from sale or disposition of assets | 262 | (510) | 21,320 |
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Ardmore Wynnewood and Trans Texas Pipelines [Member]
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| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||
| Disposal Date | June 15, 2009 | ||
| Proceeds from sale or disposition of assets | 29,000 | ||
| Gain (loss) from sale or disposition of assets | $ 21,400 | ||