Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The components of stock-based compensation for the nine month periods ended September 30, 2015 and 2014 were as follows:

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2015			2014			2015			2014
Stock options and restricted stock units	$	487		$	469		$	1,320		$	1,694
Tax benefit of stock-based compensation expense	(188		)	(180		)	(508		)	(652		)
After-tax effect of stock-based compensation	$	299		$	289		$	812		$	1,042

Schedule of Share-based Compensation, Stock Options, Activity

Stock option activity for Fuel Tech’s Incentive Plans for the nine months ended September 30, 2015 was as follows:

	Number of Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding on January 1, 2015	1,546,500		$	11.62
Granted	126,000		2.44
Exercised	—		—
Expired or forfeited	(270,000	)	14.84
Outstanding on September 30, 2015	1,402,500		$	10.17	3.90	$	—
Exercisable on September 30, 2015	1,402,500		$	10.17	3.90	$	—

Schedule of Nonvested Restricted Stock Units Activity

A summary of restricted stock unit activity for the nine months ended September 30, 2015 is as follows:

	Shares		Weighted Average Grant Date Fair Value
Unvested restricted stock units at January 1, 2015	977,069		$	5.36
Granted	789,500		3.33
Forfeited	(192,248	)	4.70
Vested	(351,938	)	5.17
Unvested restricted stock units at September 30, 2015	1,222,383		$	4.21