XML 43 R33.htm IDEA: XBRL DOCUMENT v3.22.1
Share-based Compensation - Summary of Stock Option Activities (Details) - $ / shares
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Number of Stock Options    
Number of Options, Options outstanding, beginning of period 904,123  
Number of Options, Forfeited and cancelled (34,663)  
Number of Options, Options outstanding, end of period 869,460 904,123
Number of Options, Options exercisable, end of period 215,387  
Number of Options, Options vested and expected to vest 868,256  
Stock Options, Weighted Average Exercise Price    
Weighted Average Exercise Price, Options outstanding, beginning of period $ 5.59  
Weighted Average Exercise Price, Forfeited and cancelled 3.08  
Weighted Average Exercise Price, Options outstanding, end of period 5.69 $ 5.59
Weighted Average Exercise Price, Options exercisable, end of period 12.65  
Weighted Average Exercise Price, Options vested and expected to vest, end of period $ 5.70  
Stock Options, Weighted Average Remaining Contractual Term    
Weighted Average Remaining Contractual Term (in years), Options outstanding 8 years 10 months 28 days 9 years 2 months 4 days
Weighted Average Remaining Contractual Term (in years), Options exercisable 8 years 2 months 19 days  
Weighted Average Remaining Contractual Term (in years), Options vested and expected to vest 8 years 10 months 28 days