Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2016

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 three and six month periods ended June 30, 2016 and 2015 were as follows:

	Three Months Ended   June 30,					Six Months Ended   June 30,
	2016		2015			2016		2015
Stock options and restricted stock units	$	580	$	561		$	1,041	$	833
Tax benefit of stock-based compensation expense	—		(217		)	—		(320		)
After-tax effect of stock-based compensation	$	580	$	344		$	1,041	$	513

Schedule of Share-based Compensation, Stock Options, Activity

Stock option activity for Fuel Tech’s Incentive Plans for the six months ended June 30, 2016 was as follows:

	Number of Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding on January 1, 2016	1,191,125		$	10.48
Granted	81,000		1.58
Exercised	—		—
Expired or forfeited	(150,375	)	15.79
Outstanding on June 30, 2016	1,121,750		$	9.12	4.74	$	—
Exercisable on June 30, 2016	1,121,750		$	9.12	4.74	$	—

Schedule of Nonvested Restricted Stock Units Activity

A summary of restricted stock unit activity for the six months ended June 30, 2016 is as follows:

	Shares		Weighted Average Grant Date Fair Value
Unvested restricted stock units at January 1, 2016	1,204,883		$	4.21
Granted	845,862		1.88
Forfeited	(132,499	)	5.11
Vested	(381,916	)	4.36
Unvested restricted stock units at June 30, 2016	1,536,330		$	2.81