Share Based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

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

Schedule of Stock Based Compensation

All stock-based compensation is included in operating expenses for the periods as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
Compensation cost recognized:
Selling, general & administrative	$	88,040	$	360,884	$	177,158	$	638,357
Research & development		6,678		8,780		14,360		29,337
	$	94,718	$	369,664	$	191,518	$	667,694

Schedule of Stock Option Activity

Stock option activity under the 1998, 1999, 2001, 2003, 2006 and 2015 Stock Option Plans (collectively, the “Plans”) during the periods indicated below were as follows:

	Number of Shares Subject to Issuance			Weighted-average Exercise Price		Weighted-average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at December 31, 2016		1,665,420		$	1.40		3.62 years	$	2,414,446
Granted		-			-
Forfeited or expired		(2,500	)		2.79
Exercised		(10,000	)		1.01
Outstanding at June 30, 2017		1,652,920		$	1.40		3.12 years	$	4,159,931
Exercisable at June 30, 2017		1,054,483		$	1.39		3.10 years	$	2,655,401

Schedule of Restricted Stock Units Outstanding

	Number of Shares			Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value
Outstanding at December 31, 2016		32,714		$	1.89	$	26,010
Granted		12,285			3.01		-
Vested and settled in Shares		(16,974	)		2.42		-
Outstanding at June 30, 2017		28,025		$	2.14	$	20,060