Cost Associated With Exit And Restructuring Activities (Liabilities And Expenses Related To Exit And Restructuring Activities) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period			$ 1,048	$ 1,301
Charged to earnings	0	138	0	2,090
Cash paid			(872)	(2,086)
Balance at the end of period	$ 176	$ 1,305	$ 176	$ 1,305