Business Segment Information (Schedule Of Reconciliation Of Segment Expenditures For Property, Plant And Equipment To Condensed Consolidated Total Expenditures For Property, Plant And Equipment) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 01, 2012	Jun. 26, 2011	Jul. 01, 2012	Jun. 26, 2011
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenditures for property, plant and equipment	$ 15,563	$ 9,292	$ 28,893	$ 15,132
Segment [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenditures for property, plant and equipment	14,802	9,202	24,544	14,978
Corporate [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Expenditures for property, plant and equipment	$ 761	$ 90	$ 4,349	$ 154