Fair Value Measurements (Assets and Liabilities Carried at Fair Value Measured on a Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Dec. 28, 2014	Dec. 29, 2013
Carrying Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ (1,568)	$ (1,319)
Foreign Currency Contract, Asset, Fair Value Disclosure	3,205	293
Foreign exchange derivative liabilities, net	(302)	(396)
Contingent consideration	(91)	(4,926)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	(1,568)	(1,319)
Foreign Currency Contract, Asset, Fair Value Disclosure	0	0
Foreign exchange derivative liabilities, net	0	0
Contingent consideration	0	0
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 Currency Contract, Asset, Fair Value Disclosure	3,205	293
Foreign exchange derivative liabilities, net	(302)	(396)
Contingent consideration	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Foreign Currency Contract, Asset, Fair Value Disclosure	0	0
Foreign exchange derivative liabilities, net	0	0
Contingent consideration	$ (91)	$ (4,926)