Fair Value Measurements (Assets and Liabilities Carried at Fair Value Measured on a Recurring Basis) (Details) - USD ($) $ in Thousands	Jul. 02, 2017	Apr. 02, 2017	Jan. 01, 2017	Jul. 03, 2016	Apr. 03, 2016	Jan. 03, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	$ 64,076	$ 63,978	$ 63,201	$ 62,878	$ 58,579	$ 57,350
Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	1,893		1,678
Foreign exchange derivative assets, net	(7,057)		(1,208)
Foreign exchange derivative liabilities, net	(1,946)		(1,370)
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	64,076		63,201
Fair Value, Measurements, Recurring [Member] | Quoted Prices In Active Markets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	1,893		1,678
Foreign exchange derivative assets, net	0		0
Foreign exchange derivative liabilities, net	0		0
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	0		0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0		0
Foreign exchange derivative assets, net	(7,057)		(1,208)
Foreign exchange derivative liabilities, net	(1,946)		(1,370)
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	0		0
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0		0
Foreign exchange derivative assets, net	0		0
Foreign exchange derivative liabilities, net	0		0
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	$ 64,076		$ 63,201