COMMITMENTS AND CONTINGENCIES (Details) (USD $)	6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2012 Y	Jun. 30, 2012 Aberdeen, MS	Mar. 31, 2007 Aberdeen, MS, Placquemenie, LA and Pasadena, TX facilities agreement	Jun. 30, 2012 Lake Charles, LA facility party
Legal Proceedings
Remaining cost of completing capital projects		$ 2,600,000
Environmental Regulation
Number of settlement agreements with USEPA to resolve non-compliance disclosures			1
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				2,000,000
Accrual of remediation costs				3,200,000
Period to come into compliance of requirements of final rule from the effectiveness of the rule (in years)	3
Maximum capital expenditure with existing final rule	$ 15,000,000