Goodwill And Other Intangible Assets (Components Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 25, 2011	Dec. 26, 2010
Total amortized finite-lived intangible assets, Gross Amount	$ 189,235	$ 179,955
Total identifiable intangible assets, Gross Amount	211,354	202,051
Amortized finite-lived intangible assets, Gross Accumulated Amortization	117,993	111,228
Customer Lists [Member]
Finite-lived intangible assets, Amortizable Life Minimum (years)	6
Finite-lived intangible assets, Amortizable Life Maximum (years)	20
Finite-lived customer lists, Gross Amount	90,472	79,696
Amortized finite-lived intangible assets, Gross Accumulated Amortization	47,455	41,226
Trade Name [Member]
Finite-lived intangible assets, Amortizable Life Minimum (years)	1
Finite-lived intangible assets, Amortizable Life Maximum (years)	30
Finite-lived trade name, Gross Amount	30,291	29,148
Indefinite-lived trade names, Gross Amount	22,119	22,096
Amortized finite-lived intangible assets, Gross Accumulated Amortization	17,820	16,634
Patents, License Agreements [Member]
Finite-lived intangible assets, Amortizable Life Minimum (years)	3
Finite-lived intangible assets, Amortizable Life Maximum (years)	14
Finite-lived patents, license agreements, Gross Amount	61,318	60,410
Amortized finite-lived intangible assets, Gross Accumulated Amortization	48,068	45,048
Other Intangibles [Member]
Finite-lived intangible assets, Amortizable Life Minimum (years)	2
Finite-lived intangible assets, Amortizable Life Maximum (years)	6
Finite-lived other intangibles, Gross Amount	7,154	10,701
Amortized finite-lived intangible assets, Gross Accumulated Amortization	$ 4,650	$ 8,320

Finite Lived Patents License Agreements Gross

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Total Identifiable Intangible Assets Gross

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Gross carrying amount before accumulated amortization as of the balance sheet date of an asset comprised of customer information, acquired in a business combination or other transaction, having a finite beneficial life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

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Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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The maximum useful life of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company.

+ References

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The minimum useful life of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company.

+ References

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Gross carrying amount before accumulated amortization as of the balance sheet date of the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a reasonably expected period of economic benefit.

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Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 45

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Gross carrying amount before accumulated amortization as of the balance sheet date of intangible assets not otherwise specified in the taxonomy having a reasonably expected period of economic benefit.

+ References

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