Loss per Share (Tables)

12 Months Ended

Dec. 31, 2021

Loss per Share [Abstract]

Weighted Average Shares Outstanding

Accordingly, warrants issued with a $0.01 per share exercise price, are included in weighted average shares outstanding as follows:

	2021		2020
Weighted average shares outstanding
Common shares		481,619,621		359,880,132
Common shares issuable assuming excercise of nominally priced warrants		36,736,021		18,248,513
Weighted average shares outstanding		518,355,642		378,128,645

Anti-dilutive Equity Securities

Anti-dilutive equity securities consist of the following at December 31, 2021 and 2020, respectively (dollars in thousands):

	2021		2020
Common stock options		31,760		31,938
Common stock purchase warrants		168,192		142,266
Convertible notes payable		90,380		58,657
		290,332		232,861