Inventories - Major Classes of Inventories (Detail) - USD ($) $ in Thousands	Jun. 28, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Raw materials	$ 104,405	$ 106,955
Work-in-process	31,808	31,611
Finished goods	122,494	121,655
Gross inventories	258,707	260,221
Excess and obsolete reserves	(25,607)	(31,823)
Net inventories	$ 233,100	$ 228,398