Derivative Financial Instruments (Schedule of Company's Derivative Instruments on Accumulated Other Comprehensive Income and the Unaudited Condensed Consolidated Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Oct. 03, 2021	Sep. 27, 2020
Derivatives designated as hedging instruments | Cash Flow Hedges | Foreign Exchange Forward
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in accumulated other comprehensive income - Effective Portion	$ 444	$ (1,530)	$ (235)	$ (608)
Derivatives designated as hedging instruments | Cash Flow Hedges | Foreign Exchange Forward | Net revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from accumulated other comprehensive income into Income -Effective Portion	545	(1,614)	(407)	(595)
Derivatives designated as hedging instruments | Cash Flow Hedges | Foreign Exchange Forward | Cost of revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from accumulated other comprehensive income into Income -Effective Portion	(1)	3	0	2
Derivatives designated as hedging instruments | Cash Flow Hedges | Foreign Exchange Forward | Research and development
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from accumulated other comprehensive income into Income -Effective Portion	12	27	56	32
Derivatives designated as hedging instruments | Cash Flow Hedges | Foreign Exchange Forward | Sales and marketing
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from accumulated other comprehensive income into Income -Effective Portion	(27)	167	50	95
Derivatives designated as hedging instruments | Cash Flow Hedges | Foreign Exchange Forward | General and administrative
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from accumulated other comprehensive income into Income -Effective Portion	(4)	24	13	10
Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in Other income (expense), net	$ 1,818	$ (1,424)	$ 2,871	$ (774)