Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

v2.4.0.8
Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Income Taxes          
Provision for income taxes, as a percentage of income before income taxes 24.70% 25.00% 31.50% 25.50%  
Statutory U.S. federal income tax rate (as a percent) 35.00% 35.00% 35.00% 35.00%  
Foreign tax credit benefits (as a percent) (12.70%) (6.80%) (4.30%) (6.50%)  
Addition to net favorable foreign items (as a percent) (17.40%) (4.20%) (5.90%) (4.00%)  
Uncertain tax positions (as a percent) 18.80%   6.40%    
Accrued amount related to unrecognized tax positions $ 11,486   $ 11,486   $ 10,571