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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Sep. 30, 2017
Oct. 01, 2016
Income Taxes [Abstract]        
Decrease in liabilities for unrecognized tax benefits     $ 2,463  
Effect on Income Tax Expense (Benefit) [Line Items]        
Cash repatriated during the current period     38,000  
Remeasurement of repatriation deferred tax liability [Member]        
Effect on Income Tax Expense (Benefit) [Line Items]        
Deferred Other Tax Expense (Benefit) $ 892 $ 1,402 $ 3,100 $ 3,388