Business Realignment and Restructurings Realignment Charges Classified by Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	$ 2,583	$ 27	$ 3,187	$ 1,162
Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	926	27	1,012	27
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	1,180		1,698	1,125
Design and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	477		477	10
Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	1,042	27	1,419	549
Control Devices [Member] | Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	603	$ 27	603	27
Control Devices [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	190		567	512
Control Devices [Member] | Design and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	249		249	10
Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	1,305		1,305
Electronics [Member] | Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	323		323
Electronics [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	754		754
Electronics [Member] | Design and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	228		228
Stoneridge Brazil [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges			153
Stoneridge Brazil [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs			86	67
Unallocated Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	236		310	613
Unallocated Corporate [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 236		$ 310	$ 613