Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Income Tax Disclosure [Abstract]  
Liability for unrecognized tax benefits $ 2,803
Unrecognized tax benefits, income tax penalties and interest accrued 574
Unrecognized tax benefits that would impact the effective tax rate 2,468
Reductions in unrecognized tax benefits as a result of expiration of the statute of limitations in various jurisdictions. $ 131
Minimum  
Income Tax Examination [Line Items]  
Income Tax Examination, Year under Examination 2007
Maximum  
Income Tax Examination [Line Items]  
Income Tax Examination, Year under Examination 2013