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Income Taxes
 3 Months Ended
Mar. 31, 2013
Income Taxes [Abstract]  
Income Taxes
8. Income Taxes

The Company files income tax returns in the United States Federal jurisdiction, in a limited number of foreign jurisdictions, and in many state jurisdictions. The Company is currently under examination by the Internal Revenue Service for years 2009 and 2010. With few exceptions, the Company is no longer subject to U.S. Federal, state or foreign income tax examinations for years before 2008.

The Company had $5.7 million and $5.2 million of unrecognized tax benefits at March 31, 2013 and December 31, 2012, respectively. The Company does not believe it is reasonably possible that the total amounts of unrecognized tax benefits will change in the following twelve months; however, actual results could differ from those currently expected. Of the balance of unrecognized tax benefits, $2.2 million would affect the Company’s effective tax rate if recognized at some point in the future.

The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. The Company provided for income taxes at estimated effective tax rates of 31.7% and 37.2% for the three month periods ended March 31, 2013 and March 31, 2012, respectively.