Stock-Based Compensation Arrangements (Tables)

9 Months Ended

Sep. 30, 2015

Stock-Based Compensation Arrangements [Abstract]

Total Compensation Cost Recorded for Stock-Based Compensation

Total stock-based compensation is as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
Stock option grants beginning of period	$	251,374	$	108,363	$	491,197	$	348,545
Stock-based arrangements during the period:
Stock option grants		92		—		157,463		1,166
Restricted stock issued:
Employee stock purchase plan		1,088		1,279		3,129		4,730
	$	252,554	$	109,642	$	651,789	$	354,441

Schedule of Stock option activity

The following table details stock option activity:

	Nine Months Ended				Nine Months Ended
	September 30, 2015				September 30, 2014
			Weighted Avg				Weighted Avg
			Exercise				Exercise
	Shares		Price		Shares		Price
Outstanding, beginning of period		4,523,900	$	0.39		5,884,050	$	0.43
Stock options granted		17,793,027		0.17		137,000		0.35
Stock options exercised		—		0.00		—		0.00
Restricted stock exercised		—		0.00		—		0.00
Canceled/Expired		(58,268)		0.28		(1,210,375)		0.43
Outstanding, end of period		22,258,659	$	0.22		4,810,675	$	0.43
Exercisable, end of period		3,067,959	$	0.34		723,925	$	0.71