Consolidated Condensed Statements of Stockholders' Equity (Unaudited) (Parentheticals)

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Consolidated Condensed Statements of Stockholders' Equity (Unaudited) (Parentheticals)	Sep. 30, 2020 $ / shares
Common Stock [Member] | January 2021 Offering [Member]
Stock issued, price per share (in dollars per share)	$ 2.60
Common Stock [Member] | February 2021 Offering [Member]
Stock issued, price per share (in dollars per share)	4.10
Common Stock [Member] | March 2021 Offering [Member]
Stock issued, price per share (in dollars per share)	9.00
Common Stock [Member] | May 2020 Offering [Member]
Stock issued, price per share (in dollars per share)	3.50
Common Stock [Member] | August 2020 Offering [Member]
Stock issued, price per share (in dollars per share)	1.85
Additional Paid-in Capital [Member] | January 2021 Offering [Member]
Stock issued, price per share (in dollars per share)	2.60
Additional Paid-in Capital [Member] | February 2021 Offering [Member]
Stock issued, price per share (in dollars per share)	4.10
Additional Paid-in Capital [Member] | March 2021 Offering [Member]
Stock issued, price per share (in dollars per share)	9.00
Additional Paid-in Capital [Member] | May 2020 Offering [Member]
Stock issued, price per share (in dollars per share)	3.50
Additional Paid-in Capital [Member] | August 2020 Offering [Member]
Stock issued, price per share (in dollars per share)	$ 1.85