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Income Taxes (Details Textual)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Income Taxes (Textual) [Abstract]        
Effective tax rate 109.00% 8.00% 10.00% 53.00%
U.S. federal statutory rate     35.00%