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		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Restructuring And Related Activities [Abstract]
Balance at beginning of period			$ 1,252	$ 967
Charged to earnings	287	1,101	554	2,996
Cash paid			(1,304)	(3,175)
Balance at the end of period	$ 502	$ 788	$ 502	$ 788