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Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
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Value-added tax assessments and other civil litigation |  |
Commitments and contingencies |  |
Future payments related to value-added tax assessments and other civil litigation, minimum | $ 0 |
Future payments related to value-added tax assessments and other civil litigation, maximum | 1,000 |
Minimum number of claims that the Company's insurance coverage may not be sufficient to cover | 1 |
Non-income Tax Contingencies |  |
Commitments and contingencies |  |
Accrued liabilities related to non-income tax contingencies | $ 6,580 | $ 6,921

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- Definition The carrying amount as of the balance sheet date of the combined total of loss contingency liabilities. + 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=6952336&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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