Discontinued Operations - Summary of (Loss) Income from Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Discontinued Operations And Disposal Groups [Abstract]
Net sales	$ 5,959	$ 4,791	$ 11,924
Cost of sales	3,932	2,762	7,295
Gross profit	2,027	2,029	4,629
Selling, general and administrative expenses	1,187	1,181	2,385
Impairment		8,682
Interest expense	372	589	738
Miscellaneous income, net	(4)	(2)	(6)
(Loss) income from discontinued operations before income taxes	472	(8,421)	1,512
Income tax expense	144		477
(Loss) income from discontinued operations, net of income taxes	$ 328	$ (8,421)	$ 1,035