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Commitments and Contingencies (Narrative) (Details) R$ in Thousands, $ in Thousands |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Aug. 12, 2020 USD ($) | Aug. 12, 2020 BRL (R$) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2020 BRL (R$) | Dec. 31, 2019 BRL (R$) | Dec. 31, 2017 USD ($)
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Environmental remediation accrued undiscounted liability |  |  | $ 180 | $ 82 |  |  |  |
Environmental remediation cost incurred |  |  | 128 |  |  |  |  |
Loss recoveries and insurance gain contingencies |  |  |  |  |  |  |  | $ 1,644
Product warranty and recall accrual |  |  | 3,647 | 3,111 |  |  |  |
Cash proceeds related to damaged inventory and incremental costs |  |  | 0 |  | $ 241 |  |  |
Cash proceeds within cash flows from investing activities |  |  |  |  | 1,403 |  |  |
Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Insurance recoveries |  |  | 0 | 0 | $ 0 |  |  |
Gain on litigation |  |  |  | 6,473 |  |  |  |
Interest Income [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Gain on litigation |  |  |  | 2,392 |  |  |  |
Professional Fees [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Gain on litigation |  |  |  | 990 |  |  |  |
Stoneridge Brazil [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Litigation amount | $ 1,538 | R$ 7,995 |  |  |  |  |  |
Letter of Credit [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of credit |  |  | 1,489 |  |  |  |  |
Stoneridge Brazil [Member] | Civil, labor and other tax contingencies [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  | $ 8,416 | $ 7,300 |  | R$ 43,736 | R$ 29,700 |

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