Annual report pursuant to Section 13 and 15(d)

Warrants to Purchase Common Stock (Narrative) (Details)

v3.22.1
Warrants to Purchase Common Stock (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Investor Warrant [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award exercised 2,900,959
Warrant Issuance [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award exercised 0  
Stock-based compensation expense $ 0 $ 0