Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

A summary of the status of our stock options as of December 31, 2015, and changes during the year then ended, is presented below:

	Year Ended December 31, 2015
	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value
Outstanding at beginning of year		5,345,764		$	2.16
Granted		1,365,400			1.67
Exercised		(146,625	)		0.61
Canceled and forfeited		(1,081,725	)		2.82
Expired		(45,750	)		0.39
Outstanding at end of year		5,437,064		$	1.96	7.2 years	$	301,969
Exercisable at end of year		2,512,049		$	2.14	5.6 years	$	251,889

A summary of the status of our unvested restricted stock as of December 31, 2015, and changes during the year then ended, is presented below:

	Year Ended December 31, 2015
	Number of Shares			Weighted Average Grant-Date Fair Value
Unvested at beginning of year		498,250		$	1.91
Granted		354,000			1.73
Forfeited		(108,000	)		2.71
Expired		(50,000	)		1.93
Vested		(333,250	)		1.69
Unvested at end of year		361,000		$	1.69