Costs Associated with Exit and Restructuring Activities - Restructuring Reserve Activity (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 28, 2014 June 2013 Plan and April 2014 Plan [Member]	Dec. 31, 2013 December 2012 Plan [Member]
Restructuring Reserve Activity
Restructuring liability at beginning	$ 3,100	$ 1,600
Restructuring and restructuring-related charges, excluding asset impairments and write-offs	5,571	800
Cost paid	(5,622)	(2,400)
Restructuring liability at ending	$ 3,049	$ 0