Income Taxes (Details) (USD $) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2011 |
Sep. 30, 2010 |
Sep. 30, 2011 |
Sep. 30, 2010 |
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| Income Taxes (Textual) [Abstract] | ||||
| Effective income tax rate | (390.70%) | 30.90% | 73.10% | 32.00% |
| Income tax (benefit) expense | $ (6,653,000) | $ 16,330,000 | $ (25,966,000) | $ 62,532,000 |
| Benefit of prior research and development tax credit claims | $ 4,600,000 | $ 4,600,000 | ||
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- Definition Income taxes.
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- Definition A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to research tax credits generated or utilized under enacted tax laws during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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