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Business Realignment and Restructurings Realignment Charges Classified by Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	$ 246	$ 604
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	212	518
Design and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	34
Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	192	377
Control Devices [Member] \| Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	192	377
Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	12
Electronics [Member] \| Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Severance benefit	(22)
Electronics [Member] \| Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	34
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	42	74
Unallocated Corporate [Member] \| Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 42	$ 74