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Business Realignment and Restructurings Realignment Charges Classified by Statement of Operations) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges $ 1,080 $ 401 $ 1,386 $ 3,588
Cost of Goods Sold [Member]        
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges 1 103 8 1,115
Selling, General and Administrative Expenses [Member]        
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges 1,105 263 1,369 1,961
Design and Development Expense [Member]        
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges (26) 35 9 512
Control Devices [Member]        
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges   283 192 1,702
Control Devices [Member] | Cost of Goods Sold [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance costs   70   673
Control Devices [Member] | Selling, General and Administrative Expenses [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance costs   178 192 745
Control Devices [Member] | Design and Development Expense [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance costs   35   284
Electronics [Member]        
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges (16) 105 (3) 1,410
Electronics [Member] | Cost of Goods Sold [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance costs 1 33 1 356
Electronics [Member] | Selling, General and Administrative Expenses [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance costs 9 72   826
Severance benefit     (13)  
Electronics [Member] | Design and Development Expense [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance costs     9 228
Severance benefit (26)      
Stoneridge Brazil [Member]        
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges   12 59 165
Stoneridge Brazil [Member] | Cost of Goods Sold [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance costs 7   7 86
Stoneridge Brazil [Member] | Selling, General and Administrative Expenses [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance costs 52 12 52 79
Unallocated Corporate [Member]        
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges 1,096 1 1,138 311
Unallocated Corporate [Member] | Selling, General and Administrative Expenses [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance costs $ 1,096 $ 1 $ 1,138 $ 311