Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

Class Of Stock [Line Items]

Schedule of Assumptions for Fair Value of Option Grant

In connection with the stock option grants during 2018 and 2017, the fair value of each option grant was estimated on the date of the grant using the Black-Scholes option pricing model with the following assumptions:

	2018		2017
Risk-free interest rate	2% - 3%		1% - 2%
Expected life (years)		3.21		6.80
Expected volatility	83%		95%
Expected dividend yield	Zero		Zero

Schedule of Changes in Common Stock Options

The following summarizes the changes in common stock options for 2018 and 2017:

	2018					2017
	Options			Weighted Average Exercise Price		Options			Weighted Average Exercise Price
Outstanding at beginning of year		5,040,450		$	0.97		5,169,200		$	0.96
Granted		526,500		$	0.43		50,000		$	0.48
Exercised		(173,130	)	$	0.43		(10,000	)	$	0.08
Expired		(1,016,870	)	$	1.74		—		N/A
Forfeited		(73,050	)	$	0.77		(168,750	)	$	0.45
Outstanding at end of year		4,303,900		$	0.75		5,040,450		$	0.97
Options exercisable at year end		2,533,700		$	0.96		2,672,337		$	1.43
Weighted-average fair value of options granted    during the year				$	0.17				$	0.38

Schedule of Information about All Stock Options Outstanding

The following table summarizes information about all stock options outstanding at December 31, 2018:

Exercise price	Options Outstanding		Weighted Average Remaining Life(years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Remaining Life (years)		Weighted Average Exercise Price
$ 0.24 to $ 0.40		100,000		8.5	$	0.34		20,000		7.3	$	0.24
$ 0.42 to $ 1.00		3,438,900		7.5	$	0.48		1,748,700		7.0	$	0.51
$ 1.01 to $ 2.00		765,000		0.2	$	2.00		765,000		0.2	$	2.00
		4,303,900		6.2	$	0.75		2,533,700		5.0	$	0.96

Other Options Issued [Member]

Class Of Stock [Line Items]

Schedule of Stock Options and Other Stock Options Issued

Other Options	2018		2017
Options outstanding, beginning of year		625,000		625,000
Options outstanding, end of year		625,000		625,000

2003 Stock Option and Appreciation Rights Plan [Member]

Class Of Stock [Line Items]

Schedule of Stock Options and Other Stock Options Issued

2003 Plan	2018			2017
Options outstanding, beginning of year		985,000			995,000
Options exercised		—			(10,000	)
Options expired		(660,000	)		—
Options forfeited		(15,000	)		—
Options outstanding, end of year		310,000			985,000

2010 Non-Qualified Stock Option Plan [Member]

Class Of Stock [Line Items]

Schedule of Stock Options and Other Stock Options Issued

2010 Plan	2018		2017
Options outstanding, beginning of year		830,000		780,000
Options granted		85,000		50,000
Options outstanding, end of year		915,000		830,000

Equity Partners Stock Option Plan [Member]

Class Of Stock [Line Items]

Schedule of Stock Options and Other Stock Options Issued

Equity Partners Plan	2018			2017
Options outstanding, beginning of year		230,000			230,000
Options expired		(230,000	)		—
Options outstanding, end of year		—			230,000

2016 Stock Option Plan [Member]

Class Of Stock [Line Items]

Schedule of Stock Options and Other Stock Options Issued

2016 Plan	2018			2017
Options outstanding, beginning of year		2,370,450			2,539,200
Options granted		441,500			—
Options exercised		(173,130	)		—
Options expired		(126,870	)		—
Options forfeited		(58,050	)		(168,750	)
Options outstanding, end of year		2,453,900			2,370,450