Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Share equity incentive plans - Schedule Of Options Activity (Details)

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Share equity incentive plans - Schedule Of Options Activity (Details) - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Number of Options      
Outstanding at the beginning of the year (in shares) 9,874,165 9,887,125  
Granted (in shares) 1,708,500 2,581,893  
Exercised (in shares) (1,301,233) (1,656,994)  
Forfeited (in shares) (300,038) (937,859)  
Outstanding at the end of the year (in shares) 9,981,394 9,874,165 9,887,125
Exercisable at the end of the year, Number of options (in shares) 6,150,329 5,624,558  
Weighted-Average Exercise Price      
Outstanding at the beginning of the year (in dollars per share) $ 1.99 $ 1.77  
Granted (in dollars per share) 3.71 2.56  
Exercised (in dollars per share) 0.94 0.87  
Forfeited (in dollars per share) 3.71 3.22  
Outstanding at the end of the year (in dollars per share) 2.37 1.99 $ 1.77
Exercisable at the end of the year, weighted average remaining contractual term (in dollars per share) $ 1.99 $ 1.58  
Weighted Average Remaining Contractual Life (Years)      
Options Outstanding 6 years 7 months 24 days 6 years 9 months 29 days 6 years 4 months 24 days
Options Exercisable 5 years 6 months 14 days 5 years 3 months 18 days