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Debt (Narrative) (Details)
¥ in Thousands, kr in Thousands, R$ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
Dec. 31, 2019
BRL (R$)
Dec. 31, 2019
SEK (kr)
Jun. 05, 2019
USD ($)
Dec. 31, 2018
USD ($)
Sep. 12, 2014
USD ($)
Nov. 02, 2007
USD ($)
Debt Instrument [Line Items]                
Notes covenant compliance The Company was in compliance with all Credit Facility and debt covenants at December 31, 2019 and 2018.              
Borrowings outstanding $ 126,000         $ 96,000    
Outstanding letters of credit 1,768         1,815    
2020 2,672              
2021 454              
2024 126,000              
Revolving Credit Facility [Member]                
Debt Instrument [Line Items]                
Capitalized deferred financing costs 1,366              
Line of credit facility, maximum borrowing capacity         $ 400,000   $ 300,000  
Credit facility, borrowing capacity               $ 100,000
Increase in maximum borrowing capacity of credit facility         $ 150,000      
Borrowings outstanding 126,000         96,000    
Write off of deferred debt issuance cost 275              
Debt instrument covenant default of other debt maximum amount 30,000              
Debt instrument covenant uninsured asset losses maximum amount 30,000              
Line of Credit [Member]                
Debt Instrument [Line Items]                
Line of credit facility, maximum borrowing capacity 2,136     kr 20,000   2,259    
Line of credit 0         0    
Suzhou Short-Term Credit Line [Member]                
Debt Instrument [Line Items]                
Line of credit facility, maximum borrowing capacity 8,618 ¥ 60,000            
Borrowings outstanding $ 2,154         $ 0    
Outstanding credit lines weighted-average interest rate 4.80% 4.80% 4.80% 4.80%        
Suzhou Short-Term Credit Line [Member] | Maximum [Member]                
Debt Instrument [Line Items]                
Outstanding credit lines interest rate 5.00%              
Suzhou Short-Term Credit Line [Member] | Minimum [Member]                
Debt Instrument [Line Items]                
Outstanding credit lines interest rate 4.70%              
Stoneridge Brazil [Member]                
Debt Instrument [Line Items]                
Long-term debt, weighted average interest rate 7.00% 7.00% 7.00% 7.00%        
Stoneridge Brazil [Member] | Line of Credit [Member]                
Debt Instrument [Line Items]                
Line of credit facility, maximum borrowing capacity $ 1,244   R$ 5,000          
Borrowings outstanding 0              
Stoneridge Brazil [Member] | Term Loan [Member]                
Debt Instrument [Line Items]                
2020 518              
2021 $ 454