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Debt (Narrative) (Details) ¥ in Thousands, kr in Thousands, R$ in Thousands, $ in Thousands |  | 6 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2020 BRL (R$) | Jun. 30, 2020 SEK (kr) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 SEK (kr) | Jun. 30, 2020 CNY (¥) | Jun. 26, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 BRL (R$) | Dec. 31, 2019 SEK (kr) | Dec. 31, 2019 CNY (¥) | Jun. 05, 2019 USD ($) | Sep. 12, 2014 USD ($) | Nov. 02, 2007 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings outstanding | $ 161,000 | $ 161,000 |  |  |  |  |  |  | $ 126,000 |  |  |  |  |  |
Cash and cash equivalents | 72,412 | 72,412 |  |  |  |  |  |  | 69,403 |  |  |  |  |  |
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 |
Increase in maximum borrowing capacity of credit facility |  |  |  |  |  |  |  |  |  |  |  |  | $ 150 |  |
Borrowings outstanding | $ 161,000 | $ 161,000 |  |  |  |  |  |  | 126,000 |  |  |  |  |  |
Maximum leverage ratio | 350.00% | 350.00% |  |  |  | 350.00% | 350.00% |  |  |  |  |  |  |  |
Minimum interest coverage ratio | 350.00% | 350.00% |  |  |  | 350.00% | 350.00% |  |  |  |  |  |  |  |
Write off of deferred debt issuance cost |  |  |  |  | $ 275 |  |  |  |  |  |  |  |  |  |
Debt instrument covenant default of other debt maximum amount | $ 30,000 | $ 30,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument covenant uninsured asset losses maximum amount |  | $ 30,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, weighted average interest rate | 2.85% | 2.85% |  |  |  | 2.85% | 2.85% |  |  |  |  |  |  |  |
Asset-Based Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000
Suzhou Short-Term Credit Line [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 7,077 | $ 7,077 |  |  |  |  | ¥ 50,000 |  |  |  |  | ¥ 40,000 |  |  |
Borrowings outstanding | $ 3,538 | $ 3,538 |  |  |  |  |  |  | $ 2,154 |  |  |  |  |  |
Outstanding credit lines weighted-average interest rate | 4.62% | 4.62% |  |  |  | 4.62% | 4.62% |  | 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% | 5.00% | 5.00% |  |  |  |  |  |  |  |  |  |  |
Suzhou Short-Term Credit Line [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding credit lines interest rate |  | 4.35% | 4.35% | 4.35% |  |  |  |  |  |  |  |  |  |  |
Bank Acceptance Draft Credit Line [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, borrowing capacity | $ 2,123 | $ 2,123 |  |  |  |  | ¥ 15,000 |  | $ 2,154 |  |  | ¥ 15,000 |  |  |
Borrowings outstanding | 150 | 150 |  |  |  |  |  |  |  |  |  |  |  |  |
Letter of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding letters of credit | $ 1,720 | $ 1,720 |  |  |  |  |  |  | 1,768 |  |  |  |  |  |
Stoneridge Brazil Long-Term Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, weighted average interest rate | 8.80% | 8.80% |  |  |  | 8.80% | 8.80% |  |  |  |  |  |  |  |
Stoneridge Brazil Short-Term Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term debt, weighted average interest rate | 5.64% | 5.64% |  |  |  | 5.64% | 5.64% |  |  |  |  |  |  |  |
Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facility covenant compliance |  | The Company was in compliance with all credit facility covenants at June 30, 2020 and December 31, 2019 | The Company was in compliance with all credit facility covenants at June 30, 2020 and December 31, 2019 | The Company was in compliance with all credit facility covenants at June 30, 2020 and December 31, 2019 |  |  |  |  |  |  |  |  |  |  |
Stoneridge Brazil?s Bank Overdraft Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility, borrowing capacity |  |  |  |  |  |  |  |  | 1,244 | R$ 5,000 |  |  |  |  |
Subsidiary borrowed and repaid |  | $ 1,306 | R$ 7,150 |  |  |  |  |  |  |  |  |  |  |  |
Outstanding letters of credit |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |
Amendment Number One [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capitalized deferred financing costs | $ 1,037 | 1,037 |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility required minimum liquidity |  |  |  |  |  |  |  | $ 150,000 |  |  |  |  |  |  |
Amendment Number One [Member] | Revolving Credit Facility [Member] | Quarter Ended December 31, 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum interest coverage ratio |  |  |  |  |  |  |  | 275.00% |  |  |  |  |  |  |
Amendment Number One [Member] | Revolving Credit Facility [Member] | Quarter Ended March 31, 2021 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum interest coverage ratio |  |  |  |  |  |  |  | 325.00% |  |  |  |  |  |  |
Amendment Number One [Member] | Revolving Credit Facility [Member] | Quarters Ended After March 31, 2021 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum interest coverage ratio |  |  |  |  |  |  |  | 350.00% |  |  |  |  |  |  |
Amendment Number One [Member] | Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  |  |  | $ 130,000 |  |  |  |  |  |  |
Amendment Number One [Member] | Revolving Credit Facility [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stoneridge Brazil [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2020 | $ 1,293 | 1,293 |  |  |  |  |  |  |  |  |  |  |  |  |
2021 | 152 | 152 |  |  |  |  |  |  |  |  |  |  |  |  |
Specified Hedge Borrowings [Member] | Amendment Number One [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings outstanding | $ 50,000 | 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Specified Hedge Borrowings [Member] | Amendment Number One [Member] | Revolving Credit Facility [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Electronics [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 2,146 | 2,146 |  |  |  | kr 20,000 |  |  | 2,136 |  | kr 20,000 |  |  |  |
Borrowings outstanding | $ 0 | 0 |  |  |  |  |  |  | 0 |  |  |  |  |  |
Subsidiary borrowed and repaid |  | $ 13,629 |  |  |  |  |  |  |  |  |  |  |  |  |
Electronics [Member] | Letter of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary borrowed and repaid | kr |  |  |  | kr 126,652 |  |  |  |  |  |  |  |  |  |  |
Suzhou Short-Term Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  | $ 5,746 |  |  |  |  |  |

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