XML 45 R32.htm IDEA: XBRL DOCUMENT v2.4.1.9

Summary of Significant Accounting Policies (Narrative) (Details) (USD $)	3 Months Ended												12 Months Ended			9 Months Ended	0 Months Ended	36 Months Ended	0 Months Ended		7 Months Ended	5 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Dec. 31, 2011	Dec. 31, 2014	Aug. 01, 2014	May 26, 2014	Jul. 31, 2014	Dec. 31, 2014	Oct. 18, 2014	Oct. 04, 2010	Dec. 31, 2010
Accounting Policy [Line Items]
Depreciation expense													$ 22,299,000us-gaap_CostOfGoodsSoldDepreciation	$ 24,099,000us-gaap_CostOfGoodsSoldDepreciation	$ 23,674,000us-gaap_CostOfGoodsSoldDepreciation
Impairment of intangible assets													0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill	0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill	0us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill
Dividend from noncontrolling interest														212,000us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
Less: income (loss) attributable to noncontrolling interest	(6,444,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	[1]	1,160,000us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	[1]	(7,221,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	[1]	(978,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	[1]	117,000us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	466,000us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	634,000us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	160,000us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	(13,483,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	1,377,000us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	(1,613,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Preproduction costs related to long-term supply arrangements, costs capitalized	10,067,000us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized								11,584,000us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized				10,067,000us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized	11,584,000us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized				10,067,000us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized				10,067,000us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized
Proceeds from sale of Wiring business													71,386,000us-gaap_ProceedsFromDivestitureOfBusinesses
Goodwill impairment charge (benefit)													51,458,000us-gaap_GoodwillImpairmentLoss
Acquisition of business													664,000us-gaap_GoodwillAcquiredDuringPeriod
Goodwill	1,078,000us-gaap_Goodwill								54,348,000us-gaap_Goodwill				1,078,000us-gaap_Goodwill	54,348,000us-gaap_Goodwill	62,208,000us-gaap_Goodwill			1,078,000us-gaap_Goodwill				1,078,000us-gaap_Goodwill
Intangible assets, net	56,637,000us-gaap_IntangibleAssetsNetExcludingGoodwill								68,498,000us-gaap_IntangibleAssetsNetExcludingGoodwill				56,637,000us-gaap_IntangibleAssetsNetExcludingGoodwill	68,498,000us-gaap_IntangibleAssetsNetExcludingGoodwill				56,637,000us-gaap_IntangibleAssetsNetExcludingGoodwill				56,637,000us-gaap_IntangibleAssetsNetExcludingGoodwill
Amortization													4,784,000us-gaap_AdjustmentForAmortization	5,187,000us-gaap_AdjustmentForAmortization	5,731,000us-gaap_AdjustmentForAmortization
Intangible assets amortization expense estimated for the next 5 years	4,500,000sri_FiniteLivedIntangibleAssetsAmortizationExpenseOneThroughFiveYears												4,500,000sri_FiniteLivedIntangibleAssetsAmortizationExpenseOneThroughFiveYears					4,500,000sri_FiniteLivedIntangibleAssetsAmortizationExpenseOneThroughFiveYears				4,500,000sri_FiniteLivedIntangibleAssetsAmortizationExpenseOneThroughFiveYears
Intangible assets, weighted-average remaining amortization period, years													14 years
Valuation allowance	67,907,000us-gaap_DeferredTaxAssetsValuationAllowance								71,827,000us-gaap_DeferredTaxAssetsValuationAllowance				67,907,000us-gaap_DeferredTaxAssetsValuationAllowance	71,827,000us-gaap_DeferredTaxAssetsValuationAllowance				67,907,000us-gaap_DeferredTaxAssetsValuationAllowance				67,907,000us-gaap_DeferredTaxAssetsValuationAllowance
Research and development expense													41,609,000us-gaap_ResearchAndDevelopmentExpense	40,372,000us-gaap_ResearchAndDevelopmentExpense	38,945,000us-gaap_ResearchAndDevelopmentExpense
Research and development expense percentage													6.30%sri_ResearchAndDevelopmentExpensePercentage	6.10%sri_ResearchAndDevelopmentExpensePercentage	6.40%sri_ResearchAndDevelopmentExpensePercentage
Research and development expense reimbursed													12,319,000us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned	16,982,000us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned	16,369,000us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
Share-based compensation expense													5,406,000us-gaap_ShareBasedCompensation	4,974,000us-gaap_ShareBasedCompensation	4,890,000us-gaap_ShareBasedCompensation
Share-based compensation expense capitalized as inventory													0us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	0us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	0us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
Antidilutive securities excluded from computation of earnings per share, average price per share									$ 15.73us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice					$ 15.73us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Amortization of financing costs													850,000us-gaap_AmortizationOfFinancingCosts	908,000us-gaap_AmortizationOfFinancingCosts	855,000us-gaap_AmortizationOfFinancingCosts
Deferred financing costs, net	1,767,000us-gaap_DeferredFinanceCostsNet								1,168,000us-gaap_DeferredFinanceCostsNet				1,767,000us-gaap_DeferredFinanceCostsNet	1,168,000us-gaap_DeferredFinanceCostsNet				1,767,000us-gaap_DeferredFinanceCostsNet				1,767,000us-gaap_DeferredFinanceCostsNet	597,000us-gaap_DeferredFinanceCostsNet
Accumulated goodwill	300,083,000us-gaap_GoodwillImpairedAccumulatedImpairmentLoss								248,625,000us-gaap_GoodwillImpairedAccumulatedImpairmentLoss				300,083,000us-gaap_GoodwillImpairedAccumulatedImpairmentLoss	248,625,000us-gaap_GoodwillImpairedAccumulatedImpairmentLoss				300,083,000us-gaap_GoodwillImpairedAccumulatedImpairmentLoss				300,083,000us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Goodwill impairment loss (gain) attributable to noncontrolling interest	6,142,000sri_GoodwillImpairmentLossAttributableToNoncontrollingInterest
Product warranty and recall accrual	1,204,000us-gaap_ProductWarrantyAccrualNoncurrent								1,019,000us-gaap_ProductWarrantyAccrualNoncurrent				1,204,000us-gaap_ProductWarrantyAccrualNoncurrent	1,019,000us-gaap_ProductWarrantyAccrualNoncurrent				1,204,000us-gaap_ProductWarrantyAccrualNoncurrent				1,204,000us-gaap_ProductWarrantyAccrualNoncurrent
Inventory amount, FIFO	34,636,000us-gaap_FIFOInventoryAmount								33,220,000us-gaap_FIFOInventoryAmount				34,636,000us-gaap_FIFOInventoryAmount	33,220,000us-gaap_FIFOInventoryAmount				34,636,000us-gaap_FIFOInventoryAmount				34,636,000us-gaap_FIFOInventoryAmount
Inventory amount, weighted average cost	36,617,000us-gaap_WeightedAverageCostInventoryAmount								46,308,000us-gaap_WeightedAverageCostInventoryAmount				36,617,000us-gaap_WeightedAverageCostInventoryAmount	46,308,000us-gaap_WeightedAverageCostInventoryAmount				36,617,000us-gaap_WeightedAverageCostInventoryAmount				36,617,000us-gaap_WeightedAverageCostInventoryAmount
Foreign currency transaction gain (loss)													(1,212,000)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax	(2,109,000)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax	(3,979,000)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Noncontrolling interest	22,550,000us-gaap_MinorityInterest								39,540,000us-gaap_MinorityInterest				22,550,000us-gaap_MinorityInterest	39,540,000us-gaap_MinorityInterest				22,550,000us-gaap_MinorityInterest				22,550,000us-gaap_MinorityInterest
Noncontrolling Interest [Member]
Accounting Policy [Line Items]
Dividend from noncontrolling interest														212,000us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Less: income (loss) attributable to noncontrolling interest													(13,483,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember	1,377,000us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember	(1,613,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember
Electronics [Member]
Accounting Policy [Line Items]
Acquisition of business													664,000us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = sri_ElectronicsMember
Goodwill	1,078,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sri_ElectronicsMember								604,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sri_ElectronicsMember				1,078,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sri_ElectronicsMember	604,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sri_ElectronicsMember	598,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sri_ElectronicsMember			1,078,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sri_ElectronicsMember				1,078,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sri_ElectronicsMember
PST [Member]
Accounting Policy [Line Items]
Goodwill impairment charge (benefit)	27,960,000us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember		(5,802,000)us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember		29,300,000us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember								51,458,000us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember			23,498,000us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember
Goodwill									53,744,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember					53,744,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember	61,610,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember
Goodwill impairment loss (gain) attributable to noncontrolling interest	6,142,000sri_GoodwillImpairmentLossAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember		(1,274,000)sri_GoodwillImpairmentLossAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember		6,436,000sri_GoodwillImpairmentLossAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember								11,304,000sri_GoodwillImpairmentLossAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember			5,162,000sri_GoodwillImpairmentLossAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember
Senior Notes [Member]
Accounting Policy [Line Items]
Debt instrument, unamortized discount, percentage																							2.50%sri_DebtInstrumentUnamortizedDiscountPercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember	2.50%sri_DebtInstrumentUnamortizedDiscountPercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember
Debt instrument, interest rate, effective percentage																							10.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember
Equity Option [Member]
Accounting Policy [Line Items]
Antidilutive shares outstanding weighted average exercise price														$ 15.73sri_AntidilutiveSharesOutstandingWeightedAverageExercisePrice / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_StockOptionMember	$ 12.20sri_AntidilutiveSharesOutstandingWeightedAverageExercisePrice / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_StockOptionMember
Antidilutive securities excluded from computation of earnings per share														20,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_StockOptionMember	59,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_StockOptionMember
Long Term Cash Incentive Plan [Member]
Accounting Policy [Line Items]
Share-based compensation expense													243,000us-gaap_ShareBasedCompensation / us-gaap_AwardTypeAxis = sri_LongTermCashIncentivePlanMember	155,000us-gaap_ShareBasedCompensation / us-gaap_AwardTypeAxis = sri_LongTermCashIncentivePlanMember	47,000us-gaap_ShareBasedCompensation / us-gaap_AwardTypeAxis = sri_LongTermCashIncentivePlanMember
Customer Lists [Member]
Accounting Policy [Line Items]
Intangible assets, net	26,999,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember								32,705,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember				26,999,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember	32,705,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember				26,999,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember				26,999,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember
Customer Lists [Member] | PST [Member]
Accounting Policy [Line Items]
Intangible assets, net	26,625,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember												26,625,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember					26,625,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember				26,625,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerListsMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember
Trademarks [Member]
Accounting Policy [Line Items]
Intangible assets, net	18,886,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember								22,629,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember				18,886,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember	22,629,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember				18,886,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember				18,886,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
Trademarks [Member] | PST [Member]
Accounting Policy [Line Items]
Intangible assets, net	18,848,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember												18,848,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember					18,848,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember				18,848,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember
Developed Technology Rights [Member] | PST [Member]
Accounting Policy [Line Items]
Intangible assets, net	10,752,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember												10,752,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember					10,752,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember				10,752,000us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember / us-gaap_StatementBusinessSegmentsAxis = sri_PstMember
PST Eletronicaltda [Member]
Accounting Policy [Line Items]
Equity method investment, ownership percentage																									50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember
Percentage ownership in consolidated subsidiary																	74.00%us-gaap_SaleOfStockPercentageOfOwnershipAfterTransaction / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember	74.00%us-gaap_SaleOfStockPercentageOfOwnershipAfterTransaction / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember
Increase in equity method investment, ownership percentage																	24.00%sri_IncreaseDecreaseInEquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember
Noncontroling interest increase (decrease)													(16,990,000)us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember	(4,537,000)us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember	(4,651,000)us-gaap_MinorityInterestPeriodIncreaseDecrease / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember
Unfavorable change in foreign currency translation													3,507,000us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember	5,706,000us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember	3,918,000us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember
Dividend from noncontrolling interest														212,000us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember
Less: income (loss) attributable to noncontrolling interest													(13,483,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember	1,377,000us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember	(733,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember
Noncontrolling interest	22,550,000us-gaap_MinorityInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember								39,540,000us-gaap_MinorityInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember				22,550,000us-gaap_MinorityInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember	39,540,000us-gaap_MinorityInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember				22,550,000us-gaap_MinorityInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember				22,550,000us-gaap_MinorityInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_PstEletronicaltdaMember
Minda Stoneridge Instruments Ltd [Member]
Accounting Policy [Line Items]
Equity method investment, ownership percentage	49.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember								49.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember				49.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember	49.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember	49.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember			49.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember				49.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember
Equity method investments	6,653,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember								5,981,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember				6,653,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember	5,981,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember				6,653,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember				6,653,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = sri_MindaStoneridgeInstrumentsLtdMember
Maximum [Member]
Accounting Policy [Line Items]
Property, plant and equipment, useful life													5 years
Minimum [Member]
Accounting Policy [Line Items]
Property, plant and equipment, useful life													3 years
Wiring [Member]
Accounting Policy [Line Items]
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[1] Goodwill impairment of $29,300, $(5,802), and $27,960 related to the PST segment was recorded for the quarters ended June 30, 2014, September 30, 2014 and December 31, 2014, respectively, of which $6,436, $(1,274) and $6,142 was attributable to noncontrolling interest.

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