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HEALTH, SAFETY AND ENVIRONMENTAL MATTERS Table 1 (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Environmental Accruals Rollforward [Line Items]    
Balance as of beginning of year $ 8,569 $ 9,384
San Antonio Refinery Acquisition 14,000 0
Other additions to accrual 4,054 2,431
Payments (3,498) (3,210)
Foreign currency translation (12) (36)
Balance as of end of year $ 23,113 $ 8,569