Quarterly report pursuant to Section 13 or 15(d)

Common Stock Warrants (Details)

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Common Stock Warrants (Details) - $ / shares
Mar. 31, 2023
Dec. 31, 2022
Warrants    
Warrant outstanding (in shares) 11,177 11,177
Ten Year Warrants Issued in May 2018    
Warrants    
Exercise price of warrants (in dollars per share) $ 23.69 $ 23.69
Warrant outstanding (in shares) 6,332 6,332
Common stock warrant, Exercise price $14.71 per share, Issued March 2019    
Warrants    
Exercise price of warrants (in dollars per share) $ 14.71 $ 14.71
Warrant outstanding (in shares) 4,845 4,845