Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stock Option Activity (Details)

v3.22.2
Stock-Based Compensation - Stock Option Activity (Details) - $ / shares
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Stock-Based Compensation    
Number of Options, Outstanding at beginning of year 515,922  
Number of Options, Granted 260,500  
Number of Options, Expired (12,662)  
Number of Options, Forfeited (85,610)  
Number of Options, Outstanding at end of year 678,150 515,922
Number of Options Exercisable and vested at the end 241,683  
Weighted- Average Exercise Price, Outstanding at beginning of year $ 10.43  
Weighted- Average Exercise Price, Granted 0.76  
Weighted- Average Exercise Price, Expired 6.87  
Weighted- Average Exercise Price, Forfeited 2.79  
Weighted- Average Exercise Price, Outstanding at end of year 7.85 $ 10.43
Weighted- Average Exercise Price, Vested and expected to vest at end of year $ 18.57  
Weighted-Average Remaining Contractual Life (In Years), Outstanding 8 years 6 months 18 days 8 years 3 months 18 days
Weighted-Average Remaining Contractual Life (In Years), Granted 9 years 10 months 2 days  
Weighted-Average Remaining Term in Years Exercisable and vested at the end 2 years 3 months 18 days