Goodwill and Other Intangible Assets Goodwill (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jul. 01, 2012	Dec. 31, 2011	Jun. 26, 2011
Goodwill [Line Items]
Goodwill (gross)	$ 323,107
Accumulated Impairment Losses	(79,868)
Goodwill (net)	243,239	243,490	247,500
Foreign currency translation	$ (251)

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details