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Income Taxes (Narrative) (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Income Tax Disclosure [Abstract]        
Effective tax rate (30.40%) 23.30% 5.70% 25.30%
U.S. statutory rate 35.00% 35.00% 35.00% 35.00%