Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

Schedule of Fair Value of Assumptions

The fair value of options granted during the years ended December 31, 2018 and 2017 were estimated using the following weighted-average assumptions:

	For the Years Ended December 31,
	2018			2017
Exercise price	$	2.05		$	1.85
Expected stock price volatility		78	%		79	%
Risk-free rate of interest		2.68	%		1.61	%
Term (years)		4.0			3.1

Schedule of Warrants Outstanding

A summary of the status of the Company’s outstanding warrants as of December 31, 2018 and 2017 and changes during the year then ended are presented below:

	Number of Warrants			Weighted Average Exercise Price		Total Intrinsic Value		Weighted Average Remaining Contractual Life (in years)
Outstanding as of December 31, 2016		3,271,875		$	1.02	$	2,000,000		3.9
Issued		1,472,417			1.72		1,666,000		5.0
Outstanding as of December 31, 2017		4,744,292		$	1.24	$	7,884,000		3.6
Issued		1,053,000			1.98		-		4.2
Exercised		(1,000,000	)		0.20		1,680,000		-
Outstanding as of December 31, 2018		4,797,292		$	1.62	$	340,000		3.1
Warrants exercisable as of December 31, 2018		4,547,292		$	1.64	$	340,000		3.0

Schedule of Stock-based Compensation Expense

Stock-based compensation expense for the years ended December 31, 2018 and 2017 was comprised of the following (in thousands):

	For the Year Ended December 31,
	2018			2017
Employee stock option awards	$	2,852		$	2,423
Non-employee option awards		(572	)		1,766
Non-employee warrants		40			249
Total compensation expense	$	2,320		$	4,438

Employee Stock Option Awards [Member]

Schedule of Stock Options, Activity

A summary of option activity under the Company’s employee stock option plan for years ended December 31, 2018 and 2017 are presented below:

	Number of Shares			Weighted Average Exercise Price		Total Intrinsic Value		Weighted Average Remaining Contractual Life (in years)
Outstanding as of December 31, 2016		1,575,000		$	0.50	$	1,264,000		4.7
Employee options granted		4,150,000			1.85		4,160,000		4.5
Exercised		(6,000	)		1.08		11,000		-
Forfeited		(50,000	)		1.85		6,000		-
Outstanding as of December 31, 2017		5,669,000			1.48		7,793,000		4.3
Employee options granted		7,610,000			2.06		-		6.3
Exercised		(100,000	)		0.20		152,000		-
Expired		(250,000	)		0.10		443,000		-
Forfeited		(300,000	)		1.25		-		-
Outstanding as of December 31, 2018		12,629,000		$	1.87	$	357,000		5.2
Options vested and expected to vest as of December 31, 2018		12,629,000		$	1.87	$	357,000		5.2
Options vested and exercisable as of December 31, 2018		3,654,000		$	1.50	$	357,000		3.6

Non-Employee Stock Option Awards [Member]

Schedule of Stock Options, Activity

A summary of the activity of options that the Company granted to non-employees for the year ended December 31, 2018 and 2017 are presented below:

	Number of Shares			Weighted Average Exercise Price		Total Intrinsic Value		Weighted Average Remaining Contractual Life (in years)
Outstanding as of December 31, 2016		2,955,000		$	0.27	$	3,053,000		3.2
Non-employee options granted		250,000			1.95		225,000		4.6
Outstanding as of December 31, 2017		3,205,000			0.40		7,847,000		2.4
Non-employee options granted		200,000			1.64		-		3.7
Exercised		(10,000	)		0.20		22,000		-
Expired		(300,000	)		0.15		491,000		-
Outstanding as of December 31, 2018		3,095,000		$	0.51	$	1,567,000		1.7
Options vested and expected to vest as of December 31, 2018		3,095,000		$	0.51	$	1,567,000		1.7
Options vested and exercisable as of December 31, 2018		2,645,000		$	0.51	$	1,339,000		1.7