Quarterly report pursuant to sections 13 or 15(d)

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) (Parenthetical)

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CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
OPERATING COSTS AND EXPENSES        
Cost of petrochemical product Sales and Processing, depreciation $ 762 $ 677 $ 2,236 $ 2,049