Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Schedule of Fair Value of Share Based Payment

The fair value of share-based payment units was estimated using the Black-Scholes option pricing model with the following assumptions and weighted average fair values as follows:

	Twelve Months Ended
	December 31,
	2017		2016
Valuation assumptions:
Grant price		-	$	1.01 - $2.79
Exercise price		-	$	1.01 - $2.79
Expected dividend yield		-		0	%
Expected volatility		-		96.77% - 98.05	%
Expected life (in years)		-		5
Risk-free interest rate		-		0.94% - 2.10	%

Schedule of Stock Option Activity

Stock option activity under the Plans during the periods indicated below is as follows:

	Number of Shares Subject to Issuance			Weighted- average Exercise Price		Weighted- average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at December 31, 2015		1,901,298		$	1.46		4.51 years
Granted		269,543		$	1.31
Forfeited or expired		(160,294	)		2.58
Exercised		(345,127	)		1.13
Outstanding at December 31, 2016		1,665,420		$	1.40		3.62 years
Granted		-			-
Forfeited or expired		(24,062	)		4.06
Exercised		(10,000	)		1.01
Outstanding at December 31, 2017		1,631,358		$	1.36		1.70 years	$	2,106,669
Exercisable at December 31, 2017		1,457,764		$	1.37		1.56 years	$	1,887,777

Summary of Stock Options

The following is a summary of stock options as of December 31, 2017:

		Options Outstanding						Options Exercisable
Range of Exercise Prices		Number of Options		Weighted- average Remaining Life		Weighted- average Exercise Price		Number of Options		Weighted- average Exercise Price
$	1.15 to $1.56		1,483,298		1.70 years	$	1.16		1,343,454	$	1.16
$	1.75 to $2.79		56,000		3.49 years	$	2.03		22,250	$	2.31
$	3.12 to $5.68		92,060		0.70 years	$	4.15		92,060	$	4.15
			1,631,358		1.70 years	$	1.36		1,457,764	$	1.37

Schedule of Restricted Stock Units Outstanding

	Number of Shares			Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value
Outstanding at December 31, 2015		67,077		$	1.56	$	-
Granted		86,271			1.76
Vested and Settled in Shares		(120,634	)		1.60
Canceled / Expired		-			-
Outstanding at December 31, 2016		32,714			1.89		26,010
Granted		23,352			2.87
Vested and Settled in Shares		(50,207	)		2.31
Canceled / Expired		-		$	-		$
Outstanding at December 31, 2017		5,859		$	2.56	$	-

Schedule of Share Based Compensation Expense

Share based compensation expense for the years ended December 31, 2017 and 2016 is as follows:

	Years Ended December 31,
Compensation cost recognized:	2017		2016
Stock options	$	368,465	$	775,338
Restricted stock units		67,214		160,561
	$	435,679	$	935,899

Schedule of Stock Based Compensation

Share based compensation is included in operating expenses as follows:

	Years Ended December 31,
	2017		2016
General and administrative	$	408,772	$	873,392
Research and development		26,907		62,507
	$	435,679	$	935,899