Income Taxes Accrued Interest and Penalties, Unrecognized Tax Benefits (Details) (USD $) In Thousands | Sep. 30, 2011 | Dec. 31, 2010 |
|---|---|---|
| Income Tax Contingency [Line Items] | ||
| Accrued interest | $ 4,840 | $ 4,403 |
| Accrued penalties | 3,444 | 3,233 |
| Unrecognized tax benefits related to uncertain tax positions | 30,477 | 42,175 |
| The amount of unrecognized tax benefits that, if recognized, would affect our effective tax rate | $ 30,404 | $ 30,832 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This element represents the amount of statutory penalties accrued as of the date of the statement of financial position for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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