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Income Taxes - Schedule of open tax years for which the company could be subject to income tax examination (Details) | 12 Months Ended
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Dec. 31, 2015
United States | Minimum |
Income Tax Examination [Line Items] |
Year under examination | 2012
United States | Maximum |
Income Tax Examination [Line Items] |
Year under examination | 2015
Wisconsin | Minimum |
Income Tax Examination [Line Items] |
Year under examination | 2009
Wisconsin | Maximum |
Income Tax Examination [Line Items] |
Year under examination | 2015
China | Minimum |
Income Tax Examination [Line Items] |
Year under examination | 2007
China | Maximum |
Income Tax Examination [Line Items] |
Year under examination | 2015
France | Minimum |
Income Tax Examination [Line Items] |
Year under examination | 2013
France | Maximum |
Income Tax Examination [Line Items] |
Year under examination | 2015
Germany | Minimum |
Income Tax Examination [Line Items] |
Year under examination | 2006
Germany | Maximum |
Income Tax Examination [Line Items] |
Year under examination | 2015

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Data Type: | xbrli:stringItemType
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Period Type: | duration

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- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Details
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- Details
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- Details
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