Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2019

Stockholders' Equity Note [Abstract]

Description Of Detail Information About Warrants [Table Text Block]

The table below summarizes the warrants outstanding (in share amounts) as of December 31, 2019 and as of December 31, 2018:

Warrants:	Number of Warrants
Outstanding as of January 1, 2018	18,135,832
Issued	196,750
Exercised	(14,463,097)
Expirations	(80,003)
Outstanding as of December 31, 2018	3,789,482
Issued	39,199,998
Exercised	(4,818,269)
Expirations	(60,000)
Outstanding as of December 31, 2019	38,111,211

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

	Exercise/
	Conversion
	price(s)
Outstanding Warrants	(range)		Expiring	December 31, 2019	December 31, 2018
Equity Warrants – Fundraising	$	1.05 - $5.375	2019 - 2024	38,111,211	3,789,482