Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2014

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- month periods ended March 31, 2014 and 2013 were as follows:

	Three Months Ended   March 31,
	2014			2013
Stock options and restricted stock units	$	424		$	329
Tax benefit of stock-based compensation expense	(163		)	(120		)
After-tax effect of stock-based compensation	$	261		$	209

Schedule of Share-based Compensation, Stock Options, Activity

Stock option activity for Fuel Tech’s Incentive Plan for the three- months ended March 31, 2014 was as follows:

	Number of Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding on January 1, 2014	1,688,500		$	11.88
Granted	—		—
Exercised	(30,000	)	5.35
Expired or forfeited	—		—
Outstanding on March 31, 2014	1,658,500		$	12.00	3.53	$	226
Exercisable on March 31, 2014	1,648,500		$	12.04	3.51	$	226

Schedule of Nonvested Share Activity

Non-vested stock option activity for the three months ended March 31, 2014 was as follows:

	Non-Vested Stock Options Outstanding	Weighted-Average Grant Date Fair Value
Outstanding on January 1, 2014	10,000	$	6.10
Granted	—	—
Vested	—	—
Forfeited	—	—
Outstanding on March 31, 2014	10,000	$	6.10

Schedule of Nonvested Restricted Stock Units Activity

A summary of restricted stock unit activity for the three-month period ended March 31, 2014 is as follows:

	Shares		Weighted Average Grant Date Fair Value
Unvested restricted stock units at January 1, 2014	772,016		$	5.35
Granted	256,000		5.02
Forfeited	(11,166	)	4.98
Vested	(217,674	)	5.70
Unvested restricted stock units at March 31, 2014	799,176		$	5.15