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Discontinued Operation - Schedule of Condensed Income Statement (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
Discontinued Operations And Disposal Groups [Abstract]
Net sales	$ 15,103
Income from operations	1,326
Income before taxes	1,289
Income tax expense	(629)
Income from discontinued operations, net of tax	660
Noncontrolling interest in income from discontinued operations, net of tax	86
Total discontinued operations, net of tax and noncontrolling interest	$ 574

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Pretax income (loss) from operations of a business component (exclusive of any gain (loss) on disposal, or provision therefore) during the reporting period, until its disposal.

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Income tax expense or benefit attributable to Income or Loss from discontinued operations during the phase-out period.

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