Goodwill And Other Intangible Assets (Components Of Intangible Assets) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 28, 2015	Dec. 28, 2014
Finite-Lived Intangible Assets [Line Items]
Total amortized finite-lived intangible assets, Gross Amount	$ 188,261	$ 195,405
Total identifiable intangible assets, Gross Amount	208,773	215,917
Total amortized finite-lived intangible assets, Gross Accumulated Amortization	150,189	150,977
Total identifiable intangible assets accumulated amortization	150,189	150,977
Customer Lists
Finite-Lived Intangible Assets [Line Items]
Finite-lived customer lists, Gross Amount	76,611	79,110
Total amortized finite-lived intangible assets, Gross Accumulated Amortization	59,330	58,873
Trade Name
Finite-Lived Intangible Assets [Line Items]
Finite-lived trade name, Gross Amount	25,170	27,172
Indefinite-lived trade names, Gross Amount	20,512	20,512
Total amortized finite-lived intangible assets, Gross Accumulated Amortization	17,021	18,031
Patents, License Agreements
Finite-Lived Intangible Assets [Line Items]
Finite-lived patents, license agreements, Gross Amount	55,657	58,060
Total amortized finite-lived intangible assets, Gross Accumulated Amortization	51,036	52,448
Software and Software Development Costs
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Internal-use Software, Gross Amount	23,805	24,034
Total amortized finite-lived intangible assets, Gross Accumulated Amortization	15,887	14,758
Other Intangibles
Finite-Lived Intangible Assets [Line Items]
Finite-lived other intangible assets, Gross Amount	7,018	7,029
Total amortized finite-lived intangible assets, Gross Accumulated Amortization	$ 6,915	$ 6,867
Minimum | Customer Lists
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	6 years
Minimum | Trade Name
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	1 year
Minimum | Patents, License Agreements
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	3 years
Minimum | Software and Software Development Costs
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	3 years
Minimum | Other Intangibles
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	2 years
Maximum | Customer Lists
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	20 years
Maximum | Trade Name
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	30 years
Maximum | Patents, License Agreements
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	14 years
Maximum | Software and Software Development Costs
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	7 years
Maximum | Other Intangibles
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	6 years