Quarterly report pursuant to Section 13 or 15(d)

Share-based compensation - Equity Incentive Plan (Details)

v3.22.1
Share-based compensation - Equity Incentive Plan (Details) - Plan - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Number of Shares    
Outstanding at the beginning of the period 749,147  
Granted 0  
Outstanding at the end of the period 749,147 749,147
Exercisable at December 31, 2021 578,412  
Weighted Average Exercise Price    
Outstanding the beginning of the period $ 9.03  
Outstanding at the end of the period 9.03 $ 9.03
Exercisable at December 31, 2021 $ 9.67  
Weighted Average Remaining Contractual Term (years)    
Weighted average remaining contractual term (years) 8 years 10 months 6 days 9 years 1 month 2 days
Exercisable at December 31, 2021 8 years 9 months 3 days  
Intrinsic value of options outstanding $ 0