Discontinued Operations - Statement of Earnings of Discontinued Operation (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 29, 2013	Sep. 29, 2013
Discontinued Operations and Disposal Groups [Abstract]
Net sales	$ 55,931	$ 153,561
Cost of goods sold	50,402	140,550
Selling, general and administrative expenses	2,938	10,260
Restructuring and impairment charge	52	648
Operating income	2,539	2,103
Other income, net	187	254
Earnings before income taxes	2,726	2,357
Income tax expense	1,022	1,154
Net earnings from discontinued operations	$ 1,704	$ 1,203