Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Revolving credit facility	$ 126,000	$ 96,000
Debt:
Long-term debt	129,126
Total debt	3,126	2,516
Less: current portion	(2,672)	(1,533)
Total long-term debt, net	454	983
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility	$ 126,000	96,000
Debt:
Debt, maturity	June 2024
Suzhou Short-Term Credit Line [Member]
Debt Instrument [Line Items]
Revolving credit facility	$ 2,154	0
Debt:
Debt, maturity	August 2020
Maximum [Member] \| Line of Credit [Member]
Debt:
Interest rate	2.81%
Maximum [Member] \| Suzhou Short-Term Credit Line [Member]
Debt:
Outstanding credit lines interest rate	5.00%
Minimum [Member] \| Line of Credit [Member]
Debt:
Interest rate	2.77%
Minimum [Member] \| Suzhou Short-Term Credit Line [Member]
Debt:
Outstanding credit lines interest rate	4.70%
Stoneridge Brazil Short-Term Obligations [Member]
Debt Instrument [Line Items]
Short-term debt		989
Stoneridge Brazil Long-Term Notes [Member]
Debt:
Long-term debt	$ 972	$ 1,527
Debt, maturity	November 2021
Interest rate		7.00%

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

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Fair value of the amount outstanding under the credit facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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