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Income Taxes (Narrative) (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Income Taxes [Abstract]        
U.S. statutory rate 35.00% 35.00% 35.00% 35.00%
Tax holiday impact 1.70% 2.30% 1.50% 1.70%