Discontinued Operations - Schedule of Condensed Income Statement and Balance Sheet (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales		$ 60,722	$ 59,021
Operating income		7,364	9,061
Other income, net		25	66
Interest expense		(105)	(82)
Income before income taxes		7,284	9,045
Income tax expense		(3,484)	(4,876)
Net income		$ 3,800	$ 4,169