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Commitments and Contingencies (Narrative) (Details) In Thousands, unless otherwise specified |  |  | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2013 USD ($) | Dec. 31, 2012 USD ($) | Sep. 30, 2013 Letter of Credit [Member] USD ($) | Sep. 30, 2013 PST Eletrnica Ltda. [Member] USD ($) | Sep. 30, 2013 PST Eletrnica Ltda. [Member] BRL | Dec. 31, 2012 PST Eletrnica Ltda. [Member] USD ($) | Sep. 30, 2012 PST Eletrnica Ltda. [Member] | Sep. 30, 2013 PST Eletrnica Ltda. [Member] Value Added Tax [Member] USD ($) | Sep. 30, 2013 PST Eletrnica Ltda. [Member] Value Added Tax [Member] BRL | Sep. 30, 2013 PST Eletrnica Ltda. [Member] Interest On Tax [Member] USD ($) | Sep. 30, 2013 PST Eletrnica Ltda. [Member] Interest On Tax [Member] BRL | Sep. 30, 2013 PST Eletrnica Ltda. [Member] Penalties On Tax [Member] USD ($) | Sep. 30, 2013 PST Eletrnica Ltda. [Member] Penalties On Tax [Member] BRL | Sep. 30, 2013 Minda Stoneridge Instruments Ltd [Member]
Accrual for Environmental Loss Contingencies, Gross | $ 1,340 | $ 1,340 |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage | 74.00% |  |  | 74.00% | 74.00% |  | 74.00% |  |  |  |  |  |  | 49.00%
Environmental Exit Costs, Anticipated Cost |  |  | 2,000 |  |  |  |  |  |  |  |  |  |  |
Percentage Of State Value Added Tax | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies, Aggregate Tax Assessment, Not Accrued |  |  |  | 41,500 | 92,500 |  |  | 5,900 | 13,200 | 5,100 | 11,400 | 30,500 | 67,900 |
Accounts Payable and Accrued Liabilities | 733 | 733 |  |  |  |  |  |  |  |  |  |  |  |
Product Warranty Accrual, Noncurrent | 249 | 494 |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Estimate Of Possible Loss |  |  |  | $ 11,598 |  | $ 11,925 |  |  |  |  |  |  |  |

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- Definition Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(1),(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 1, 5 -Article 9 + Details
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