Share Based Compensation (Tables)

3 Months Ended

Mar. 31, 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 March 31,
	2017		2016
Compensation cost recognized:
Selling, general and administrative	$	89,118	$	277,473
Research and development		7,682		20,557
	$	96,800	$	298,030

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 March 31, 2017		1,652,920		$	1.40	3.37 years	$	2,183,084
Exercisable at March 31, 2017		1,043,233		$	1.39	3.34 years	$	1,386,754

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		8,429			2.61		-
Vested and settled in Shares		(8,545	)		2.22		-
Outstanding at March 31, 2017		32,598		$	2.05	$	20,060