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Income Taxes
3 Months Ended
Mar. 31, 2013
Income Tax Disclosure [Abstract]  
Income Taxes
Income Taxes
Our effective tax rate was 29% for the three months ended March 31, 2013 compared to 28% for the three months ended March 31, 2012.
As of March 31, 2013, our gross liability for unrecognized tax benefits was $4.7 million. If fully recognized, these tax benefits would decrease our income tax expense by $4.7 million ($3.2 million, net of federal tax). Subject to the completion of certain audits or the expiration of the applicable statute of limitations, we believe it is reasonably possible that we will recognize $0.4 million in unrecognized tax benefits within the next 12 months.