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Income Taxes (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Sep. 30, 2013
Dec. 31, 2009
Income Tax Examination [Line Items]          
U.S. federal income tax rate 35.00% 35.00% 35.00%    
Net non-current deferred tax assets $ 10,334,000 $ 6,157,000      
Net non-current deferred tax liabilities 41,684,000 41,966,000      
Total foreign tax credit carryforwards 46,283,000 54,102,000      
Unrecognized tax benefits 7,203,000 9,769,000 16,788,000   13,719,000
Unrecognized tax benefits that would have a favorable impact on effective tax rate       4,800,000  
Accrued interest and penalties 1,000,000   600,000 600,000  
Anticipated amount of unrecognized tax benefits 5,100,000        
Minimum [Member]
          
Income Tax Examination [Line Items]          
Tax credit carryforwards, years 5 years        
Maximum [Member]
          
Income Tax Examination [Line Items]          
Tax credit carryforwards, years 20 years        
Prepaid Expenses And Other Current Assets [Member]
          
Income Tax Examination [Line Items]          
Net current deferred income tax assets 37,100,000 20,400,000      
Accrued Income And Other Taxes [Member]
          
Income Tax Examination [Line Items]          
Net current deferred tax liabilities 10,900,000 10,000,000      
Foreign Country [Member]
          
Income Tax Examination [Line Items]          
Total foreign tax credit carryforwards       22,100,000  
Tax credit carryforwards, years 7 years        
Operating loss carryforwards       16,100,000  
State [Member]
          
Income Tax Examination [Line Items]          
Tax credit carryforwards       12,800,000  
Operating loss carryforwards       $ 500,000