Fair Value Measurements (Assets) (Details) - USD ($) $ in Thousands	Jul. 04, 2015	Jan. 03, 2015
Assets Fair Value Disclosure [Abstract]
Derivative financial instruments	$ (484)	$ (1,374)
Fair Value, Measurements, Recurring [Member]
Assets Fair Value Disclosure [Abstract]
Derivative financial instruments	(484)	(1,374)
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets Fair Value Disclosure [Abstract]
Derivative financial instruments	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets Fair Value Disclosure [Abstract]
Derivative financial instruments	(484)	(1,374)
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Derivative financial instruments	0	0
Fair Value, Measurements, Recurring [Member] | Government Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available-for-sale securities, fair value disclosure	9,063	9,835
Fair Value, Measurements, Recurring [Member] | Government Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets Fair Value Disclosure [Abstract]
Available-for-sale securities, fair value disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Government Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets Fair Value Disclosure [Abstract]
Available-for-sale securities, fair value disclosure	9,063	9,835
Fair Value, Measurements, Recurring [Member] | Government Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Available-for-sale securities, fair value disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member]
Assets Fair Value Disclosure [Abstract]
Available-for-sale securities, fair value disclosure	2,210	2,205
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets Fair Value Disclosure [Abstract]
Available-for-sale securities, fair value disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets Fair Value Disclosure [Abstract]
Available-for-sale securities, fair value disclosure	2,210	2,205
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Fair Value Disclosure [Abstract]
Available-for-sale securities, fair value disclosure	$ 0	$ 0