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Tax Years Subject To Examination (Details)	12 Months Ended
	Dec. 31, 2014
Internal Revenue Service IRS [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2013
Alabama Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2011
Illinois Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2011
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	2011
Pennsylvania Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2011
China Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2010
Germany Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2012
Poland Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2010
United Kingdom Tax [Member]
Income Tax Examination [Line Items]
Earliest Tax Year Open To Examination	2011

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- Definition

The earliest tax year still open to audit by the income tax examination authorities

+ References

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