Discontinued Operations (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset impairment charge, net of tax			$ 5,600,000
Income (loss) from discontinued operations, net of tax	0	0	(3,151,000)
Mt. Vernon, Indiana facility [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales			15,600,000
Production margin			1,148,000
Expenses			582,000
Impairment of assets			5,778,000
Restructuring and other costs			0
Gain on sale of assets			239,000
Income (loss) from operations			(4,973,000)
Other income			0
Foreign currency translation loss from liquidation of investment			0
Provision (benefit) for taxes on income			(1,822,000)
Income (loss) from discontinued operations, net of tax			$ (3,151,000)