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Income Taxes (Narrative) (Details) (USD $) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Mar. 31, 2013 Minimum [Member] | Mar. 31, 2013 Maximum [Member] | Dec. 31, 2012 German Tax Authority [Member] | Mar. 31, 2013 German Tax Authority [Member]
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Estimated tax rate | 34.00% | (6.50%) |  |  |  |
Unrepatriated foreign earnings | $ 1,500,000 |  |  |  |  |
Non-U.S. earnings that have been targeted for future repatriation | 19,400,000 |  |  |  |  |
Open tax years |  |  | 2000 | 2012 |  |
Estimated range of change, upper bound | 0 |  |  |  |  |
Estimated range of change, lower bound | (800,000) |  |  |  |  |
Unrecognized tax benefits |  |  |  |  |  | 22,300,000
Amounts of tax benefits that would affect effective tax rate if recognized |  |  |  |  |  | 11,400,000
Payment to taxing authority to pursue litigation |  |  |  |  | $ 12,800,000 |

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- Definition Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 11 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6969291&loc=d3e28680-109314 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43 -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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