Revenue (Revenue by Segment and Geographical Location) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Total net sales	$ 175,764	$ 203,386	$ 458,275	$ 643,924
North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	97,576	115,816	240,549	358,476
South America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	12,827	16,542	34,407	50,488
Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	52,028	59,634	147,741	201,242
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	13,333	11,394	35,578	33,718
Control Devices [Member]
Disaggregation of Revenue [Line Items]
Total net sales	99,942	108,690	243,797	332,876
Control Devices [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	79,106	92,743	190,889	287,529
Control Devices [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	8,833	6,046	20,655	15,914
Control Devices [Member] | Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	12,003	9,901	32,253	29,433
Electronics [Member]
Disaggregation of Revenue [Line Items]
Total net sales	62,995	78,154	180,071	260,560
Electronics [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	18,470	23,073	49,660	70,947
Electronics [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	43,195	53,588	127,086	185,328
Electronics [Member] | Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	1,330	1,493	3,325	4,285
Stoneridge Brazil [Member]
Disaggregation of Revenue [Line Items]
Total net sales	12,827	16,542	34,407	50,488
Stoneridge Brazil [Member] | South America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	$ 12,827	$ 16,542	$ 34,407	$ 50,488