Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Income Taxes      
Provision (benefit) for income taxes, as a percentage of income before income taxes (59.60%) 33.10%  
Statutory U.S. federal income tax rate (as a percent) 35.00% 35.00%  
Adjustments to foreign valuation allowances (as a percent)   (9.70%)  
Uncertain tax positions (as a percent)   7.70%  
Intercompany dividends paid by foreign subsidiaries to the U.S. corporation. $ 21,500    
Income tax benefit 6,720    
Accrued amount related to unrecognized tax positions $ 12,349   $ 12,402