Comprehensive Income and Accumulated Other Comprehensive Income (Loss) - Total Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Equity [Abstract]
Net income	$ 21,591	$ 15	$ 1,955	$ 24,609
Foreign currency translation income (loss), net of $0.4 million, $1.5 million, $2.1 million, and $0.2 million tax, respectively	(2,872)	12,734	10,193	261
Adjustments to pension and postretirement liability, net of $0.5 million, $0.7 million, $1.1 million, and $1.4 million tax, respectively	843	1,145	1,691	2,305
Total comprehensive income	$ 19,562	$ 13,894	$ 13,839	$ 27,175