Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Stockholders' Equity (Parentheticals)

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Consolidated Statements of Stockholders' Equity (Parentheticals)
Dec. 31, 2023
$ / shares
Series A Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) $ 1,000
Series A-2 Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) 1,000
Series A-3 Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) 1,000
Series A-4 Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) 1,000
Series A-5 Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) 1,000
Series AA Convertible Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) 1,000
Series AA-2 Convertible Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) 1,000
Series AA-3 Convertible Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) 1,000
Series AA-4 Convertible Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) 1,000
Series AA-5 Convertible Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) 1,000
Series AAA Convertible Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) 1,000
Series AAA-2 Convertible Preferred Stock [Member]  
Shares Issued, Price Per Share (in dollars per share) 1,000
March 2021 Offering [Member]  
Shares Issued, Price Per Share (in dollars per share) 2.6
Prefunded Common Stock Warrants [Member]  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 2.6