Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share

Schedule for the calculations of basic and diluted earnings per share

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Net (loss) income	$	(2,731,000)	$	421,000	$	(7,910,000)	$	(5,391,000)
Less: decrease in fair value of investor warrants		—		(3,981,000)		(156,000)		(822,000)
Loss available to common stockholders	$	(2,731,000)	$	(3,560,000)	$	(8,066,000)	$	(6,213,000)
Basic and diluted weighted-average common shares outstanding		166,393,000		115,031,000		162,723,000		113,079,000
Add: dilutive effect of equity instruments		—		3,739,000		1,183,000		4,271,000
Diluted weighted-average shares outstanding		166,393,000		118,770,000		163,906,000		117,350,000
Earnings per share – basic	$	(0.02)	$	0.00	$	(0.05)	$	(0.05)
Earnings per share – diluted	$	(0.02)	$	(0.03)	$	(0.05)	$	(0.05)

Potentially dilutive securities, excluded

	Three Months Ended June 30,		Six Months Ended June 30,
	2020	2019	2020	2019
Outstanding stock options	5,375,000	5,440,000	5,141,000	5,414,000
Warrants to purchase shares of common stock	6,866,000	19,826,000	5,917,000	19,320,000
Total potentially dilutive shares of common stock	12,241,000	25,266,000	11,058,000	24,734,000