Business Realignment and Restructurings Realignment Charges Classified by Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	$ 604	$ 1,135
Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	86
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	518	1,125
Design and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges		10
Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	377	522
Control Devices [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	377	512
Control Devices [Member] | Design and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs		10
Stoneridge Brazil [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	153
Stoneridge Brazil [Member] | Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	86
Stoneridge Brazil [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	67
Unallocated Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	74	613
Unallocated Corporate [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 74	$ 613