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Revenue (Revenue by Segment and Geographical Location) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Disaggregation of Revenue [Line Items] |  |
Total net sales | $ 225,930 | $ 204,311
North America [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 124,429 | 123,386
South America [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 20,545 | 21,633
Europe [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 71,435 | 51,783
Asia Pacific [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 9,521 | 7,509
Control Devices [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 115,357 | 118,873
Control Devices [Member] | North America [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 104,443 | 110,521
Control Devices [Member] | Europe [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 2,891 | 1,709
Control Devices [Member] | Asia Pacific [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 8,023 | 6,643
Electronics [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 90,028 | 63,805
Electronics [Member] | North America [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 19,986 | 12,865
Electronics [Member] | Europe [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 68,544 | 50,074
Electronics [Member] | Asia Pacific [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 1,498 | 866
PST [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | 20,545 | 21,633
PST [Member] | South America [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Total net sales | $ 20,545 | $ 21,633

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 32 -Paragraph 2A -URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + Details
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