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Effective Income Tax Rate (Details)	3 Months Ended
Effective Income Tax Rate (Details)	Mar. 31, 2013
Income Tax Disclosure [Abstract]
Effective income tax rate	17.50%
One hundred percent valuation allowance	100.00%

- 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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