Additional percentage of noncontrolling interest acquired

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The period over which contribution has to be completed.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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- Definition

Amount of increase (decrease) in fair value adjustment on other assets (liabilities) carried at fair value under the fair value option on the statement of cash flows of Federal Home Loan Banks (FHLBanks).

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No definition available.

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Amount of financial support to be provided in future by investment company to investee.

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Amount of investments, and noncurrent assets classified as other.

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Amount of investments classified as other.

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The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting.

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Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

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No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Investments (Narrative) (Details) R$ in Thousands, $ in Thousands	3 Months Ended		6 Months Ended		64 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	May 15, 2017	Dec. 31, 2020 USD ($)	Dec. 31, 2020 BRL (R$)	Dec. 31, 2018 USD ($)	May 16, 2017
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments	$ 496	$ (231)	$ 1,110	$ 226
Fair value and other adjustments	14	$ (100)	198	$ (139)
Investment	$ 51,385		$ 51,385			$ 53,978
MSIL
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	49.00%	49.00%	49.00%	49.00%
Equity method investments	$ 14,414		$ 14,414			13,547
Income (loss) from equity method investments	$ 482	$ (231)	$ 912	$ 226
Stoneridge Brazil [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership in consolidated subsidiary					74.00%
Percentage of additional noncontrolling interest acquired									26.00%
Stoneridge Brazil [Member] \| Noncontrolling interest
Schedule of Equity Method Investments [Line Items]
Dividends payable						6,010	R$ 24,154
Autotech Ventures [Member] \| Venture Capital Funds [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	6.60%		6.60%
Investment commitment						10,000		$ 10,000
Investment	$ 5,233		$ 5,233			$ 3,436
Contribution expected period (in years)			10 years
Contribution			$ 1,850	$ 750
Proceeds from other investments			$ 251