Revenue (Revenue by Segment and Geographical Location) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Total net sales	$ 182,966	$ 218,297
North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	99,851	119,367
South America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	14,570	17,332
Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	58,694	71,354
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	9,851	10,244
Control Devices [Member]
Disaggregation of Revenue [Line Items]
Total net sales	96,850	110,119
Control Devices [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	80,410	96,720
Control Devices [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	7,388	4,412
Control Devices [Member] | Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	9,052	8,987
Electronics [Member]
Disaggregation of Revenue [Line Items]
Total net sales	71,546	90,846
Electronics [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	19,441	22,647
Electronics [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	51,306	66,942
Electronics [Member] | Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	799	1,257
Stoneridge Brazil [Member]
Disaggregation of Revenue [Line Items]
Total net sales	14,570	17,332
Stoneridge Brazil [Member] | South America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	$ 14,570	$ 17,332