Tax Years Subject To Examination (Details)	12 Months Ended
	Dec. 31, 2015
Internal Revenue Service IRS [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2014
Alabama Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2012
Illinois Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2012
North Carolina Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2010
Oregon Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2012
Pennsylvania Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2012
China Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2011
Germany Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2014
Poland Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2011
United Kingdom Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2012