Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Revolving credit facility	$ 144,000	$ 126,000
Debt:
Total debt	7,574	3,126
Less: current portion	(7,515)	(2,672)
Total long-term debt, net	59	454
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility	$ 144,000	126,000
Debt:
Debt, maturity	June 2024
Suzhou Short-Term Credit Line [Member]
Debt Instrument [Line Items]
Revolving credit facility	$ 4,419	2,154
Debt:
Debt, maturity	September 2021
Maximum [Member] \| Suzhou Short-Term Credit Line [Member]
Debt:
Outstanding credit lines interest rate	5.00%
Minimum [Member] \| Revolving Credit Facility [Member]
Debt:
Long-term debt, weighted average interest rate	2.85%
Minimum [Member] \| Suzhou Short-Term Credit Line [Member]
Debt:
Outstanding credit lines interest rate	3.85%
Sweden Short-Term Note [Member]
Debt Instrument [Line Items]
Revolving credit facility	$ 1,737
Debt:
Debt, maturity	January 2021
Outstanding credit lines interest rate	2.60%
Stoneridge Brazil Short-Term Obligations [Member]
Debt Instrument [Line Items]
Short-term debt	$ 900
Debt:
Debt, maturity	June 2021
Short-term debt, weighted average interest rate	5.64%
Stoneridge Brazil Long-Term Notes [Member]
Debt:
Long-term debt	$ 518	$ 972
Debt, maturity	November 2021
Interest rate	8.80%

Amount of short-term and long-term debt and lease obligation.

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Fair value of the amount outstanding under the credit facility.

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