v2.4.0.6

COMMITMENTS AND CONTINGENCIES (Details 2) (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Letters of Credit |  |  |
Outstanding letters of credit | $ 11,500,000 | $ 15,800,000 |
Purchase Commitments |  |  |
Amount of prepaid long-term purchase commitments capitalized | 19,406,000 | 31,154,000 |
Aggregate amount of payments made under long-term raw material purchase agreements | 110,900,000 | 187,100,000 | 156,800,000
Amount of raw material purchases | 372,000,000 |  |
Account payable for raw material purchases | 28,200,000 |  |
Minimum |  |  |
Letters of Credit |  |  |
Terms of letters of credit | 1 month |  |
Maximum |  |  |
Letters of Credit |  |  |
Terms of letters of credit | 1 year |  |
Aberdeen, MS |  |  |
Legal Proceedings |  |  |
Remaining cost of completing capital projects | 1,100,000 |  |
Lake Charles, LA facility |  |  |
Environmental Regulation |  |  |
Estimated number of PRPs in environmental regulation matter | 200 |  |
Maximum annual costs for environmental remediation projects or related activities | 150,000 |  |
Maximum aggregate payout, including annual expenditures, for environmental remediation for acquired property. | 2,300,000 |  |
Excess remediation costs incurred | 2,100,000 |  |
Accrual of remediation costs | $ 3,000,000 |  |

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