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Derivative Instruments (Financial Information Related To Cash Flow Hedges) (Details) (USD $)
In Thousands
Jul. 02, 2011
Dec. 31, 2010
Net unrealized gains (losses) deferred in other comprehensive income, Gross $ (5,976) $ (1,523)
Net unrealized gains (losses) deferred in other comprehensive income, Income tax benefit (2,249) (573)
Net unrealized gains (losses) deferred in other comprehensive income, Net (3,727) (950)
Cash Flow Hedge [Member]
   
Net unrealized gains (losses) deferred in other comprehensive income, Gross (4,453) (1,522)
Net unrealized gains (losses) deferred in other comprehensive income, Income tax benefit (1,676) (573)
Net unrealized gains (losses) deferred in other comprehensive income, Net $ (2,777) $ (949)