Contingencies (Details) (USD $) In Thousands, unless otherwise specified			0 Months Ended
	Jun. 30, 2012 Accrued and Other Liabilities Brazilian Manufacturing Operations	Dec. 31, 2011 Accrued and Other Liabilities Brazilian Manufacturing Operations	Apr. 20, 2012 Damages from Welding Fumes, Paid by Company Resolution Agreement Related to Welding Fumes	Apr. 20, 2012 Damages from Welding Fumes, Including Contributions from Company and Other Defendants Resolution Agreement Related to Welding Fumes
Loss Contingencies [Line Items]
Amount Paid in Full Satisfaction of Obligation Under Resolution Agreement			$ 500
Amount of Damages Awarded Under Resolution Agreement				21,500
Discontinued Operation, Additional Disclosures
Remaining Brazilian Accrued Liabilities Associated with Disposition of Operations	$ 499	$ 660