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Debt (Effect Of The Derivative Financial Instruments On The Consolidated Statements Of Operations And Consolidated Statements Of Equity) (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Amount of gain (loss) recognized in other comprehensive income (loss) (effective portion) $ 174,000 $ (676,000) $ 483,000 $ (265,000)
Cedar/Rio Can Joint Venture [Member]
       
Amount of gain (loss) recognized in other comprehensive income (loss) (effective portion) $ 20,000   $ 78,000