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Income Taxes (Details Textual)	3 Months Ended
Income Taxes (Details Textual)	Mar. 31, 2013	Mar. 31, 2012
Effective Income Tax Rate, Continuing Operations	21.70%	10.60%

- 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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