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Revenue (Revenue by Segment and Geographical Location) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disaggregation of Revenue [Line Items]                      
Total net sales $ 210,814 $ 208,853 $ 220,602 $ 225,930 $ 207,440 $ 203,582 $ 209,111 $ 204,311 $ 866,199 $ 824,444 $ 695,977
North America [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 480,511 471,770 428,046
South America [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 80,175 94,533 82,589
Europe [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 270,127 224,741  
Asia Pacific [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 35,386 33,400  
Control Devices [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 441,297 447,528 408,132
Control Devices [Member] | North America [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 395,148 409,596  
Control Devices [Member] | Europe [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 14,727 8,164  
Control Devices [Member] | Asia Pacific [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 31,422 29,768  
Electronics [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 344,727 282,383 205,256
Electronics [Member] | North America [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 85,363 62,174  
Electronics [Member] | Europe [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 255,400 216,577  
Electronics [Member] | Asia Pacific [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 3,964 3,632  
PST [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 80,175 94,533 $ 82,589
PST [Member] | South America [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 80,175 $ 94,533