Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Changes in Common Stock Options

The following summarizes the changes in common stock options for the nine months ended September 30, 2019:

	Options			Weighted Average Exercise Price
Outstanding at December 31, 2018		4,303,900		$	0.75
Granted		405,350		$	0.67
Expired		(765,000	)	$	2.00
Forfeited		(468,900	)	$	0.63
Outstanding at September 30, 2019		3,475,350		$	0.49
Options exercisable at September 30, 2019		1,983,375		$	0.49