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Income Taxes Income Taxes (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Income Tax Disclosure [Abstract]        
Tax provision at the 35% statutory rate 35.00% 35.00% 35.00% 35.00%
Effective tax rate 38.40% 37.10% 38.50% 38.70%