Comprehensive Income and Accumulated Other Comprehensive Income (Loss) - Total Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Equity [Abstract]
Net income	$ 33,847	$ 29,068	$ 58,456	$ 80,805
Foreign currency translation income (loss), net of $0.3 million, $0.0 million, $0.5 million, and $0.0 million tax, respectively	(4,175)	4,536	(3,914)	(10,733)
Adjustment to pension and postretirement liability, net of $0.7 million, $0.7 million, $2.1 million, and $2.2 million tax,	1,111	1,172	3,416	3,546
Total comprehensive income	$ 30,783	$ 34,776	$ 57,958	$ 73,618