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Income Taxes
6 Months Ended
Jun. 30, 2013
Income Tax Disclosure [Abstract]  
Income Taxes
Income Taxes
The Company’s effective tax rate of 39.0% and 38.0% for the six-month periods ended June 30, 2013 and 2012, respectively, differs from the statutory federal tax rate of 34% due primarily to state taxes, non-deductible stock-based compensation, differences between U.S. and foreign tax rates, foreign losses incurred with no related tax benefit, changes in state rates, and non-deductible meals and entertainment expenses.
Fuel Tech had unrecognized tax benefits as of December 31, 2012 in the amount of $42, all of which, if ultimately recognized, will reduce Fuel Tech's annual effective tax rate. There have been no material changes in unrecognized tax benefits during the three- and six- month periods ended June 30, 2013.