Stock-Based Compensation (Tables)

6 Months Ended

Jun. 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 six month periods ended June 30, 2015 and 2014 were as follows:

	Three Months Ended   June 30,						Six Months Ended   June 30,
	2015			2014			2015			2014
Stock options and restricted stock units	$	561		$	801		$	833		$	1,225
Tax benefit of stock-based compensation expense	(217		)	(309		)	(320		)	(472		)
After-tax effect of stock-based compensation	$	344		$	492		$	513		$	753

Schedule of Share-based Compensation, Stock Options, Activity

Stock option activity for Fuel Tech’s Incentive Plans for the six months ended June 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	(264,250	)	15.02
Outstanding on June 30, 2015	1,408,250		$	10.16	4.14	$	—
Exercisable on June 30, 2015	1,408,250		$	10.16	4.14	$	—

Schedule of Nonvested Restricted Stock Units Activity

A summary of restricted stock unit activity for the six months ended June 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	(186,582	)	4.71
Vested	(351,938	)	5.17
Unvested restricted stock units at June 30, 2015	1,228,049		$	4.21