Quarterly report pursuant to Section 13 or 15(d)

Warrants - Common stock outstanding (Details)

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Warrants - Common stock outstanding (Details) - $ / shares
Mar. 31, 2022
Dec. 31, 2021
Class of Warrant or Right [Line Items]    
Shares Issuable Upon Exercise of Warrant 16,877,906 16,877,907
January 13, 2021    
Class of Warrant or Right [Line Items]    
Contractual Term 10 years 10 years
Shares Issuable Upon Exercise of Warrant 2,552,913 2,552,913
Warrants exercise price $ 0.42 $ 0.42
July 16, 2021    
Class of Warrant or Right [Line Items]    
Contractual Term 5 years 5 years
Shares Issuable Upon Exercise of Warrant 14,324,993 14,324,994
Warrants exercise price $ 11.50 $ 11.50