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Income Taxes
3 Months Ended
Mar. 31, 2013
Income Taxes [Abstract]  
Income Tax Disclosure [Text Block]
Income Taxes

The effective tax rate for the three months ended March 31, 2013 was 38.7%, as compared to 41.2% for the year ended December 31, 2012. The decrease in the effective tax rate was primarily due to a nondeductible charge related to goodwill impairment and a non-taxable gain of $5.7 million which was related to an increase in our historic noncontrolling interest in AVC, both of which were taken in 2012.