Derivative Financial Instruments (Schedule of Derivatives not Designated as Hedging Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018
Other income (expense), net | Foreign currency forward contracts | Derivatives Not Designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on cash flow hedge	$ 1,540	$ 991	$ 2,446	$ 2,930