Fair Value Measurement (Financial Assets And Liabilities Carried At Fair Value Measured On A Recurring Basis) (Details) (USD $) In Thousands	Sep. 25, 2011	Dec. 31, 2010
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Cash and cash equivalents	$ 45,004
Investments in marketable securities	3,762	4,108
Bonds - foreign government	4,976
Derivative assets	66	880
Derivative liabilities	15,566	25,200
Contingent consideration liabilities	9,566
Quoted Prices In Active Markets (Level 1) [Member]
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Cash and cash equivalents	45,004
Investments in marketable securities	3,762	4,108
Significant Other Observable Inputs (Level 2) [Member]
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Bonds - foreign government	4,976
Derivative assets	66	880
Derivative liabilities	15,566	25,200
Significant Unobservable Inputs (Level 3) [Member]
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Contingent consideration liabilities	$ 9,566

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

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