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Income Taxes (Details Textual)	3 Months Ended	9 Months Ended
Income Taxes (Details Textual)	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011
Income Taxes (Textual) [Abstract]
Effective tax rate	43.40%	47.60%	48.20%

- 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.

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