Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock Options (Details)

v3.22.1
Stockholders' Equity - Stock Options (Details) - $ / shares
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted Average Exercise Price, Outstanding (ending) $ 3.14  
Weighted Average Remaining Contractual Life, Outstanding (in years) 7 years 2 months 8 days  
Weighted Average Remaining Contractual Life, Granted (in years) 0 years  
Options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock options, Outstanding (beginning) 270,000  
Stock options, Granted 0  
Stock options, Outstanding (ending) 270,000 270,000
Stock options, Vested and exercisable as of December 31, 2021 135,000  
Weighted Average Exercise Price, Outstanding (beginning) $ 3.14  
Weighted Average Exercise Price, Granted 0  
Weighted Average Exercise Price, Outstanding (ending)   $ 3.14
Weighted Average Exercise Price, Vested and exercisable as of December 31, 2021 $ 2.32  
Weighted Average Remaining Contractual Life, Outstanding (in years)   7 years 5 months 8 days
Weighted Average Remaining Contractual Life, Vested and exercisable (in years) 7 years 6 months 10 days