Stock Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Stock Option Activity

The following table summarizes stock option activity for the six months ended June 30, 2019:

	Options Outstanding
	Shares			Weighted Average Exercise Price
Outstanding, December 31, 2018		5,613,057		$	0.83
Options granted		1,635,000			0.37
Options expired / forfeited		(2,255,250	)		1.03
Outstanding, June 30, 2019		4,992,807			0.77
Exercisable, June 30, 2019		2,186,414		$	0.81

Summary of Additional Information on Stock Options Outstanding

The following table summarizes additional information on stock options outstanding at June 30, 2019.

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted- Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$0.28 - $1.00		4,352,000		8.85	$	0.57		2,024,500	$	0.66
$1.50 - $1.80		493,207		8.18	$	1.79		134,314	$	1.78
$2.60 - $10.70		147,600		2.79	$	3.43		27,600	$	7.27
Totals		4,992,807		8.60	$	0.77		2,186,414	$	0.81

Weighted-Average Exercisable Remaining Contractual Life (Years) 8.06