Quarterly report pursuant to Section 13 or 15(d)

Share-based compensation - Equity Incentive Plan (Details)

v3.21.1
Share-based compensation - Equity Incentive Plan (Details) - Plan - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares available for future grant 230,603  
Number of Shares    
Outstanding at December 31, 2020 519,163  
Granted 62,734  
Outstanding at March 31, 2021 581,897 519,163
Exercisable at March 31, 2021 519,163  
Weighted Average Exercise Price    
Outstanding at December 31, 2020 $ 10.00  
Granted 7.26  
Outstanding at March 31, 2021 9.70 $ 10.00
Exercisable at March 31, 2021 $ 10.00  
Weighted Average Remaining Contractual Term (years)    
Weighted average remaining contractual term (years) 9 years 8 months 26 days 9 years 11 months 23 days
Exercisable at March 31, 2021 9 years 8 months 23 days  
Intrinsic value of options outstanding $ 0