Costs 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. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Restructuring and Related Activities [Abstract]
Balance at beginning of period			$ 1,252	$ 967
Charged to earnings	(120)	519	434	3,515
Cash paid			(1,275)	(3,962)
Balance at the end of period	$ 411	$ 520	$ 411	$ 520