Employee Share-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2017

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

Summary of Share-Based Compensation Expense

The share-based compensation expense and its classification in the statements of comprehensive loss were as follows:

	Year Ended December 31,
	2017		2016		2015
	(In Thousands)
Project and personnel costs	$	203	$	202	$	191
Selling, general and administrative		819		1,084		1,402
Total share-based compensation expense	$	1,022	$	1,286	$	1,593

Schedule of Fair Value of Option Award Granted Based Upon Weighted-Average Assumptions

The fair value of each option award granted during 2017, 2016 and 2015, was based upon the following weighted-average assumptions:

	Year Ending December 31,
	2017			2016			2015
Expected volatility		39.7	%		40.8	%		46.6	%
Expected dividend yield		-	%		-	%		-	%
Expected life (in years)		3.56			3.57			3.63
Risk-free interest rate		1.5	%		1.1	%		1.1	%

Summary of Stock Option Activity Under the Equity Plans

A summary of stock option activity under the Equity Plans (excluding restricted share awards) is presented below:

Stock Options:	Shares Under Options			Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
								(In Thousands)
Outstanding at January 1, 2016		3,749,783		$	4.15		2.93	$	14,456
Granted		45,000			7.61
Exercised		(883,085	)		3.64
Forfeited or expired		(61,368	)		4.64
Outstanding at December 31, 2016		2,850,330		$	4.36		2.63	$	8,961
Granted		177,000			6.94
Exercised		(1,178,617	)		3.52
Forfeited or expired		(386,348	)		6.25
Outstanding at December 31, 2017		1,462,365		$	4.85		2.51	$	2,435
Vested and expected to vest at December 31, 2017		1,421,378		$	4.79		2.46	$	2,202
Exercisable at December 31, 2017		1,285,060		$	4.55		2.24	$	2,435

Summary of Non-vested Restricted Share Activity Under the Restricted Share Plans

A summary of non-vested restricted share activity under the Restricted Share Plans is presented below:

Restricted Share Awards:	Non-vested Restricted Shares			Weighted Average Grant Date Fair Value
Non-vested at January 1, 2016		168,117		$	6.36
Granted		—			—
Vested		(92,683	)		(5.88	)
Non-vested at December 31, 2016		75,434		$	6.95
Granted		13,500			6.98
Vested		(73,851	)		(6.94	)
Non-vested at December 31, 2017		15,083		$	6.98
Expected to vest at December 31, 2017		15,083		$	6.98

Summary Weighted-average Fair Value of the Shares Issued Under the ESPP Plans

Expected volatility was based on historical volatility.

	Year Ended December 31,
	2017			2016			2015
Expected volatility		34.1	%		30.5	%		32.0	%
Expected dividend yield		-	%		-	%		-	%
Expected life (in years)		0.25			0.25			0.25
Risk-free interest rate		0.9	%		0.3	%		0.0	%