Income Taxes	6 Months Ended
Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s effective tax rate of 37% and 6% for the six-month periods ended June 30, 2015 and 2014, respectively, differs from the statutory federal tax rate of 34% due primarily to state taxes, differences between U.S. and foreign tax rates, foreign losses incurred with no related tax benefit, non-deductible commissions, and non-deductible meals and entertainment expenses. Fuel Tech had unrecognized tax benefits as of June 30, 2015 and December 31, 2014 in the amount of $117, respectively, all of which, if ultimately recognized, will reduce Fuel Tech's annual effective tax rate.

Income Taxes

6 Months Ended

Jun. 30, 2015

The Company’s effective tax rate of 37% and 6% for the six-month periods ended June 30, 2015 and 2014, respectively, differs from the statutory federal tax rate of 34% due primarily to state taxes, differences between U.S. and foreign tax rates, foreign losses incurred with no related tax benefit, non-deductible commissions, and non-deductible meals and entertainment expenses.

Fuel Tech had unrecognized tax benefits as of June 30, 2015 and December 31, 2014 in the amount of $117, respectively, all of which, if ultimately recognized, will reduce Fuel Tech's annual effective tax rate.