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Income Taxes 8 (Details) (USD $) In Thousands | 12 Months Ended
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Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2008
Summary of unrecognized income tax benefits |  |  |
Unrecognized tax benefit, beginning balance | $ 34,442 | $ 27,786 | $ 33,890
Additions for tax positions of current year | 5,119 | 4,966 | 4,858
Additions for tax positions of prior years | 550 | 3,114 | 692
Reductions for tax positions of prior years | (1,560) | (1,399) | (5,320)
Reductions for settlements of tax positions | (5,938) |  | (3,177)
Reductions for lapses in statutes of limitations | (66) | (25) | (3,157)
Unrecognized tax benefit, ending balance | $ 32,547 | $ 34,442 | $ 27,786

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- Definition The gross amount of unrecognized tax benefits (tax reductions recognized in financial reports but excluded from tax returns) pertaining to uncertain tax positions taken in tax returns as of the beginning balance sheet date, excluding amounts pertaining to examined tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a + Details
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- Definition The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(1) + Details
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- Definition The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(3) + Details
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- Definition The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a(2) + Details
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