Annual report pursuant to section 13 and 15(d)

CONSOLIDATED STATEMENTS OF INCOME (Parenthetical)

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CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
OPERATING COSTS AND EXPENSES      
Cost of petrochemical product Sales and Processing, depreciation $ 3,053 [1] $ 2,744 [2] $ 2,271 [2]
[1] Restated - see Note 3
[2] Restated - see Note 2