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v2.4.1.9

Debt (Schedule of Debt) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Oct. 15, 2014 | Dec. 31, 2013 | Oct. 04, 2010
Debt Instrument [Line Items] |  |  |  |
Credit facility | 100,000 us-gaap_LineOfCreditFacilityAmountOutstanding | $ 100,000 us-gaap_LineOfCreditFacilityAmountOutstanding |  |
Debt: |  |  |  |
Total debt | 30,306 us-gaap_BorrowedFunds |  | 197,232 us-gaap_BorrowedFunds |
Long-term debt | 130,306 us-gaap_LongTermDebt |  |  |
Less: current portion | (19,655)us-gaap_LongTermDebtCurrent |  | (12,187)us-gaap_LongTermDebtCurrent |
Total long-term debt, net | 10,651 us-gaap_LongTermDebtNoncurrent |  | 185,045 us-gaap_LongTermDebtNoncurrent |
Line of Credit [Member] |  |  |  |
Debt: |  |  |  |
Debt, maturity | September - 2019 |  |  |
Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility | 100,000 us-gaap_LineOfCreditFacilityAmountOutstanding / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  | 0 us-gaap_LineOfCreditFacilityAmountOutstanding / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |
Debt: |  |  |  |
Debt interest rate | 1.82%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |  |
Senior Notes [Member] |  |  |  |
Debt: |  |  |  |
Debt interest rate |  |  |  | 9.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember
Long-term debt |  |  | 173,061 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |
Debt, maturity | Redeemed |  |  |
PST Short-Term Obligations [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Short-term obligations | 11,249 us-gaap_ShortTermBorrowings / us-gaap_LongtermDebtTypeAxis = sri_PstShortTermObligationsMember |  | 4,822 us-gaap_ShortTermBorrowings / us-gaap_LongtermDebtTypeAxis = sri_PstShortTermObligationsMember |
Debt: |  |  |  |
Debt, maturity | Various 2015 |  |  |
PST Short-Term Obligations [Member] | Maximum [Member] |  |  |  |
Debt: |  |  |  |
Interest rate maximum | 14.94%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum / us-gaap_LongtermDebtTypeAxis = sri_PstShortTermObligationsMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |
PST Short-Term Obligations [Member] | Minimum [Member] |  |  |  |
Debt: |  |  |  |
Interest rate minimum | 12.72%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum / us-gaap_LongtermDebtTypeAxis = sri_PstShortTermObligationsMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |
PST Long-Term Notes [Member] |  |  |  |
Debt: |  |  |  |
Long-term debt | 16,770 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = sri_PstLongTermNotesMember |  | 16,896 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = sri_PstLongTermNotesMember |
Debt maturity period range start | 2016 |  |  |
Debt maturity period range end | 2021 |  |  |
PST Long-Term Notes [Member] | Maximum [Member] |  |  |  |
Debt: |  |  |  |
Interest rate maximum | 8.00%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum / us-gaap_LongtermDebtTypeAxis = sri_PstLongTermNotesMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |
PST Long-Term Notes [Member] | Minimum [Member] |  |  |  |
Debt: |  |  |  |
Interest rate minimum | 4.00%us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum / us-gaap_LongtermDebtTypeAxis = sri_PstLongTermNotesMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |
Other [Member] |  |  |  |
Debt: |  |  |  |
Total debt | 837 us-gaap_BorrowedFunds / us-gaap_LongtermDebtTypeAxis = sri_OtherDebtMember |  | 966 us-gaap_BorrowedFunds / us-gaap_LongtermDebtTypeAxis = sri_OtherDebtMember |
Suzhou Note [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Short-term obligations | 1,450 us-gaap_ShortTermBorrowings / us-gaap_LongtermDebtTypeAxis = sri_SuzhouLongTermNoteMember |  | $ 1,487 us-gaap_ShortTermBorrowings / us-gaap_LongtermDebtTypeAxis = sri_SuzhouLongTermNoteMember |
Debt: |  |  |  |
Debt interest rate | 6.72%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = sri_SuzhouLongTermNoteMember |  |  |
Debt, maturity | April - 2015 |  |  |

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