Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2014

A summary of the status of our stock options as of June 30, 2014, and changes during the six-month period then ended, is presented below:



	Six Months Ended June 30,
	Number of Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value
Outstanding at beginning of period	4,866,602		$	2.38
Granted	1,468,230		1.77
Exercised	(323,000	)	0.50
Canceled and Forfeited	(33,650	)	2.52
Expired	(120,000	)	0.53
Outstanding at end of period	5,858,182		$	2.37	7.8 years	$	619,590

Exercisable at end of period	2,623,736		$	2.21	6.5 years	$	619,590

A summary of the status of our unvested restricted stock as of June 30, 2014, and changes during the six-month period then ended, is presented below:



	Six Months Ended June 30,
	Number of Shares		Weighted Average Grant-Date Fair Value
Unvested at beginning of period	634,250		$	2.73
Granted	160,000		1.79
Vested	(149,000	)	3.16
Forfeited	(175,000	)	1.77
Expired	—		—
Unvested at end of period	470,250		$	2.63