Stock Options and Stock Grants (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Schedule of assumptions used to calculate black-scholes option pricing model for options granted

The following table illustrates the various assumptions used to calculate the Black-Scholes option pricing model for options granted for all years presented:

	Years Ended December 31,
	2019			2018
Weighted-average risk-free interest rates:		2.3	%		2.9	%
Dividend yield:		0.00	%		0.00	%
Weighted-average expected life of the option:	6 years			6 years
Weighted-average expected stock price volatility:		94	%		94	%
Weighted-average fair value of the options granted:	$	0.41		$	0.64

Schedule of option activity

The following table summarizes the option activity for our employees and directors during the year ended December 31, 2019:

						Weighted
				Weighted		Average
				Average		Remaining
				Exercise Price		Contractual		Aggregate
	Shares			per		Term		Intrinsic
Options	(Rounded)			Share		(Years)		Value (000s)
Outstanding on January 1, 2019		3,415,000		$	0.67
Granted		563,000		$	0.51
Exercised		(36,000	)	$	0.44
Forfeited or expired		(262,000	)	$	0.81
Outstanding on December 31, 2019		3,680,000		$	0.64		5.5	$	—
Exercisable on December 31, 2019		2,690,000		$	0.64		4.4	$	—
Shares available for grant		3,000,000