Share Based Compensation (Tables)

9 Months Ended

Sep. 30, 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				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Compensation cost recognized:
Selling, general & administrative	$	40,402	$	84,538	$	152,555	$	261,696
Research & development		3,057		6,274		15,605		20,634
	$	43,459	$	90,812	$	168,160	$	282,330

Schedule of Stock Option Activity

Stock option activity under the 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		102,500			2.86
Forfeited or expired		(65,688	)		4.22
Exercised		(593,838	)		1.16
Outstanding at September 30, 2018		1,074,332			1.44	2.17 years	$	1,227,767
Exercisable at September 30, 2018		939,332		$	1.28	1.91 years	$	1,197,417

Schedule of Restricted Stock Units Outstanding

The compensation expense incurred by the Company for RSUs is based on the closing market price of the Company’s common stock on the date of grant and is amortized ratably on a straight-line basis over the requisite service period and charged to general and administrative expense with a corresponding increase to additional paid-in capital.

	Number of Shares			Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value
Outstanding at December 31, 2017		5,859		$	2.56	$	-
Granted		29,822			2.07
Vested and settled in shares		(29,112	)		2.07
Outstanding at September 30, 2018		6,569		$	2.51	$	-