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Revenue (Revenue by Segment and Geographical Location) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disaggregation of Revenue [Line Items]                      
Total net sales $ 189,731 $ 175,764 $ 99,545 $ 182,966 $ 190,365 $ 203,386 $ 222,241 $ 218,297 $ 648,006 $ 834,289 $ 866,199
North America [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 330,528 457,633 480,511
South America [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 47,663 67,534 80,175
Europe [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 214,258 259,461 270,127
Asia Pacific [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 55,557 49,661 35,386
Control Devices [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 342,576 431,560 441,297
Control Devices [Member] | North America [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 261,967 365,010 395,148
Control Devices [Member] | Europe [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 29,679 22,467 14,727
Control Devices [Member] | Asia Pacific [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 50,930 44,083 31,422
Electronics [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 257,767 335,195 344,727
Electronics [Member] | North America [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 68,561 92,623 85,363
Electronics [Member] | Europe [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 184,579 236,994 255,400
Electronics [Member] | Asia Pacific [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 4,627 5,578 3,964
Stoneridge Brazil [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 47,663 67,534 80,175
Stoneridge Brazil [Member] | South America [Member]                      
Disaggregation of Revenue [Line Items]                      
Total net sales                 $ 47,663 $ 67,534 $ 80,175