Fair Value Measurements (Assets) (Details) - Fair value as of measurement date [Member] - USD ($) $ in Thousands	Jul. 02, 2016	Jan. 02, 2016
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	$ (2,582)	$ (1,252)
Quoted prices in active markets for identical assets (Level 1) [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Significant other observable inputs (Level 2) [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	(2,582)	(1,252)
Significant unobservable inputs (Level 3) [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Government securities [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	8,846	9,663
Government securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	0	0
Government securities [Member] | Significant other observable inputs (Level 2) [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	8,846	9,663
Government securities [Member] | Significant unobservable inputs (Level 3) [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	0	0
Corporate bonds [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	3,696	2,405
Corporate bonds [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	0	0
Corporate bonds [Member] | Significant other observable inputs (Level 2) [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	3,696	2,405
Corporate bonds [Member] | Significant unobservable inputs (Level 3) [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	$ 0	$ 0