Litigation Settlement, Maximum Awarded to All Plainfiffs

No definition available.

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Period Type:	instant

- Definition

This element represents the amount of aggregate tax assessment as of the balance sheed date that has not been accrued.

+ References

No definition available.

+ Details

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- Definition

This element represents the percentage of state value added tax.

+ References

No definition available.

+ Details

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- Definition

Undiscounted amount of the accrual for environmental loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.Y.Q1)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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- Definition

Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts.

+ References

+ Details

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Period Type:	instant

- Definition

The net amount (to the extent disclosed within this portion of the income statement) by which an insurance settlement exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64839914&loc=d3e16285-107787

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
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-Paragraph 1
-Subparagraph (SX 210.7-03(16))
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Period Type:	instant

- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

+ Details

Name:	us-gaap_LitigationReserve
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
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-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
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-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
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+ Details

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- Definition

The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to investments, for example fixed assets. It excludes insurance settlements classified as operating cash flows.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to operating activities. It excludes insurance settlements classified as investing cash flows, for example, insurance settlements related to fixed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 16
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3337-108585

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer) for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14394-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.24)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Commitments and Contingencies (Narrative) (Details) BRL in Thousands, $ in Thousands		12 Months Ended						24 Months Ended
	May 15, 2017	Dec. 31, 2017 USD ($)	Dec. 31, 2016 BRL	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2017 BRL	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Short-term Debt [Line Items]
Product warranty and recall accrual										$ 3,112	$ 2,617
Gain on Business Interruption Insurance Recovery		$ (189)
Cash proceeds within cash flows from operating activities		500
Cash proceeds within cash flows from investing activities		711
Estimated Insurance Recoveries										1,644
Selling, General and Administrative Expenses [Member]
Short-term Debt [Line Items]
Gain on Business Interruption Insurance Recovery		(1,923)
Control Devices [Member]
Short-term Debt [Line Items]
Environmental remediation accrued undiscounted liability										265	446
Accrued Expenses and Other Current Liabilities [Member] \| Control Devices [Member]
Short-term Debt [Line Items]
Environmental remediation accrued undiscounted liability										253	370
Letter of Credit [Member] \| Control Devices [Member]
Short-term Debt [Line Items]
Line of credit										2,000
PST Eletronica Ltda [Member]
Short-term Debt [Line Items]
Equity method investment, ownership percentage								50.00%
Loss contingencies aggregate tax assessment not accrued			BRL 99,300						BRL 99,300	30,000	30,000
Percentage of state value added tax								25.00%
Percentage ownership in consolidated subsidiary	74.00%		74.00%	74.00%	74.00%	74.00%	74.00%
PST Eletronica Ltda [Member] \| Civil, Labor and Other Tax Contingencies [Member]
Short-term Debt [Line Items]
Loss contingency, estimate of possible loss			BRL 31,800						33,800	10,200	9,800
PST Eletronica Ltda [Member] \| Value Added Tax [Member]
Short-term Debt [Line Items]
Loss contingencies aggregate tax assessment not accrued									13,200	4,000	4,000
PST Eletronica Ltda [Member] \| Interest On Tax [Member]
Short-term Debt [Line Items]
Loss contingencies aggregate tax assessment not accrued									74,700	22,600	22,600
PST Eletronica Ltda [Member] \| Penalties On Tax [Member]
Short-term Debt [Line Items]
Loss contingencies aggregate tax assessment not accrued									BRL 11,400	$ 3,400	$ 3,400
Minda Stoneridge Instruments Ltd [Member]
Short-term Debt [Line Items]
Equity method investment, ownership percentage			49.00%	49.00%					49.00%	49.00%	49.00%
Royal v Stoneridge Inc [Member]
Short-term Debt [Line Items]
Litigation liability										$ 525
Royal v Stoneridge Inc [Member] \| Maximum [Member]
Short-term Debt [Line Items]
Maximum damages sought per plaintiff		5
Litigation Settlement, Maximum Awarded to All Plainfiffs										15
Royal v Stoneridge Inc, Attorney's Fees [Member]
Short-term Debt [Line Items]
Loss contingency, estimate of possible loss										$ 375
Verde v Stoneridge Inc. [Member]
Short-term Debt [Line Items]
Litigation Settlement, Amount		$ 3