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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
CONDENSED CONSOLIDATED STATEMENTS OF INCOME        
Income tax expense (benefit) on discontinued operations $ (535) $ 773 $ (1,040) $ 906