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Share Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

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

Schedule of Share-based Compensation

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

		Three Months Ended March 31,
		2018				2017
Compensation cost recognized:
Selling, general and administrative		$	54,434			$	89,118
Research and development			6,274				7,682
		$	60,708			$	96,800

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, 2017			1,631,358			$	1.36				1.70 years			$	2,106,669

Granted			100,000				2.87
Forfeited or expired			(8,500	)			3.08
Exercised			(593,838	)			1.16
Outstanding at March 31, 2018			1,129,020			$	1.59				2.53 years			$	567,026

Exercisable at March 31, 2018			855,426			$	1.50				2.23 years			$	477,627

Schedule of Restricted Stock Units Outstanding

		Number of Shares				Weighted Average Grant Date Fair Value				Aggregate Intrinsic Value

Outstanding at December 31, 2017			5,859			$	2.56			$	-
Granted			16,296				1.80
Vested and settled in shares			(5,859	)			2.56

Outstanding at March 31, 2018			16,296			$	1.80			$	-