XML 56 R42.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Financial Instruments and Fair Value Measurements (Narrative) (Details) € in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Mar. 31, 2018 EUR (€) | Dec. 31, 2017 USD ($)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Other Liabilities, Fair Value Disclosure | $ 20,002 |  |  | $ 20,002 |  |  |  | $ 20,746
Transfers in or out of Level 3 |  |  |  | 0 |  |  |  |
Euro-Denominated Foreign Currency Forward Contracts [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on derivative instruments held for trading purposes, net | 10 |  | $ (36) | 52 |  | $ (164) |  |
Cash Flow Hedging [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
(Gain) loss from cash flow hedge derivatives to be reclassified | (665) |  |  | (665) |  |  |  |
Cash Flow Hedging [Member] | U.S. Dollar Denominated Foreign Currency Forward Contracts, Swedish Krona Functional Currency [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Notional amounts | 2,000 |  |  | 2,000 |  |  |  | 0
Cash Flow Hedging [Member] | U.S. Dollar Denominated Foreign Currency Forward Contracts Euro Functional Currency [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Notional amounts | 500 |  |  | 500 |  |  |  | 0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Forward Currency Contracts [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Notional amounts | 7,112 | [1] |  | 7,112 | [1] |  |  | 9,143
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Mexican Peso-Denominated Foreign Currency Forward Contracts [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Notional amounts | 4,612 |  |  | 4,612 |  |  |  | 9,143
Not Designated as Hedging Instrument [Member] | Forward Currency Contracts [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Notional amounts | $ 920 | [1] |  | $ 920 | [1] |  |  | $ 1,486
Orlaco [Member] |  |  |  |  |  |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |  |  |  |  |  |
Other Liabilities, Fair Value Disclosure | € |  |  |  |  |  |  | € 7,500 |
[1] | Notional amounts represent the gross contract of the derivatives outstanding in U.S. dollars.

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition (Gain) loss from cash flow hedge derivatives to be reclassified + References No definition available. + Details
Name: | sri_AmountFromCashFlowHedgeDerivativesToBeReclassified
Namespace Prefix: | sri_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. + References No definition available. + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Aggregate net gain and losses (whether realized or unrealized) on all derivative instruments held for trading purposes whether or not settled physically. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41322-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4F -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624186-113959 + Details
Name: | us-gaap_GainLossOnDerivativeInstrumentsHeldForTradingPurposesNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value portion of other liabilities. + References No definition available. + Details
Name: | us-gaap_OtherLiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=sri_EuroDenominatedForeignCurrencyForwardContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=sri_U.s.DollarDenominatedForeignCurrencyForwardContractsSwedishKronaFunctionalCurrencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=sri_U.s.DollarDenominatedForeignCurrencyForwardContractsEuroFunctionalCurrencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForwardContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=sri_MexicanPesoDenominatedForeignCurrencyForwardContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=sri_ExploitatiemaatschappijBerghaafB.v.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |