Divestiture-Related Activities (Schedule Of Operating Results Of Operations Treated As Discontinued Operations) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 25, 2011	Sep. 30, 2012	Sep. 25, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenues	$ 2,789	$ 66,140	$ 16,616	$ 225,033
Costs and other expenses	3,582	51,548	17,093	201,593
Goodwill impairment			9,700
Gain (loss) on disposition	(38)	(4)	2,226	52,265
Income (loss) from discontinued operations before income taxes	(831)	14,588	(7,951)	75,705
Provision for income taxes	1,690	3,444	(1,668)	(3,522)
Income (loss) from discontinued operations	(2,521)	11,144	(6,283)	79,227
Less: Income from discontinued operations attributable to noncontrolling interest		125		443
Income (loss) from discontinued operations attributable to common shareholders	$ (2,521)	$ 11,019	$ (6,283)	$ 78,784