Comprehensive Income and Accumulated Other Comprehensive Income (Loss) - Total Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014
Equity [Abstract]
Net income	$ 14,569	$ 33,847	$ 16,524	$ 58,456
Foreign currency translation loss, net of $2.1 million, $0.3 million, $0.0 million, and $0.5 million tax, respectively	(25,249)	(4,175)	(15,056)	(3,914)
Adjustments to pension and postretirement liability, net of $0.5 million, $0.7 million, $1.6 million, and $2.1 million tax, respectively	877	1,111	2,568	3,416
Total comprehensive income (loss)	$ (9,803)	$ 30,783	$ 4,036	$ 57,958