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Income Taxes
3 Months Ended
Mar. 31, 2012
Income Taxes [Abstract]  
Income Taxes

11. Income Taxes

The Company's effective tax rate from continuing operations for the three months ended March 31, 2011 and 2012 was 41.0% and 35.7%, respectively. For the three months ended March 31, 2011 and 2012, the Company's effective tax rate was higher than the United States federal statutory rate of 35.0% due primarily to state income taxes. Additionally, the Company's effective tax rate for the three months ended March 31, 2012 was favorably impacted by the final determination of the tax benefits related to certain liabilities assumed as a result of a 2011 acquisition.