Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Schedule of Estimates of Weighted Average Fair Value

The assumptions used in the Black-Scholes-Merton model for the periods ended September 30, 2018 and 2017, and the resulting estimates of weighted-average fair value per share of options granted during those periods, are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Volatility		-		96% to 98%		-		96% to 101%
Risk-free interest rate		-		1-2%		-		1-2%
Expected term		-		7 years		-		7 years

Schedule of Stock Options Activity

The following table summarizes all compensation plan stock options for the three and nine months ended September 30:

	Three Months Ended September 30,
	2018				2017
	Number of		Weighted		Number of			Weighted
	Stock Options		Exercise Price		Stock Options			Exercise Price
Options outstanding, beginning of period		496,667	$	1.82		560,417		$	1.68
Granted		-		-		13,750			3.76
Redeemed		-		-		(30,000	)		1.20
Exercised		-		-		-			-
Expired / terminated		-		-		-			-
Options outstanding, end of period		496,667	$	1.82		544,167		$	1.76
Options exercisable, end of period		496,009	$	1.81		534,167		$	1.78

	Nine Months Ended September 30,
	2018					2017
	Number of			Weighted		Number of			Weighted
	Stock Options			Exercise Price		Stock Options			Exercise Price
Options outstanding, beginning of period		531,667		$	1.80		557,917		$	1.60
Granted		-			-		41,250			4.42
Redeemed		(22,500	)		1.70		(55,000	)		1.22
Exercised		(7,500	)		1.40		-			-
Expired / terminated		(5,000	)		1.40		-			-
Options outstanding, end of period		496,667		$	1.81		544,167		$	1.85
Options exercisable, end of period		496,009		$	1.81		534,167		$	1.87