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Income Taxes (Details 3) (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Income Taxes |  |  |
Decrease in additional liabilities related to unrecognized income tax benefits | $ (5,600,000) | $ (900,000) |
Decrease in assets related to unrecognized income tax benefits | (1,700,000) | (300,000) |
Decrease in Unrecognized Tax Liabilities related to a foreign currency translation expense | (100,000) | (200,000) |
Unrecognized Tax Liabilities | 33,000,000 | 38,400,000 |
Unrecognized Tax Assets | 5,100,000 | 6,900,000 |
Reconciliation of total amounts of unrecognized income tax benefits |  |  |
Unrecognized tax benefit - opening balance | 25,574,000 | 26,293,000 | 27,158,000
Gross decreases - tax positions in prior period | (7,659,000) |  |
Gross increases - tax positions in current period | 5,730,000 | 5,890,000 | 4,095,000
Gross decreases - tax positions in current period |  | (64,000) | (1,629,000)
Settlements |  | (62,000) |
Lapse of statute of limitations | (1,251,000) | (6,483,000) | (3,331,000)
Unrecognized tax benefit - ending balance | 22,394,000 | 25,574,000 | 26,293,000
Expected reduction in income tax expense if uncertain tax positions are settled by the taxing authorities in the entity's favor | 18,000,000 |  |
Expected reduction in effective income tax rate if uncertain tax positions are settled by the taxing authorities in the entity's favor (as a percent) | 7.50% |  |
Interest and penalties expense |  |  |
Interest related to unrecognized tax benefits, recorded as (income) expense | (700,000) | (600,000) | 1,400,000
Penalties related to unrecognized tax benefits, recorded as income tax (income) expense | (1,500,000) | 200,000 | 1,200,000
Accrued interest and penalties |  |  |
Accrued interest related to unrecognized tax benefits | 5,500,000 | 6,200,000 |
Accrued penalties related to unrecognized tax benefits | $ 5,100,000 | $ 6,600,000 |

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- Definition The effective income tax rate of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References No definition available. + Details
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- Definition The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -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. + Details
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- Definition This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return 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 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph c -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 FASB Interpretation (FIN) -Number 48 -Paragraph 15 -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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