Quarterly report pursuant to Section 13 or 15(d)

Stockholders equity - Offerings (Details)

v3.23.3
Stockholders equity - Offerings (Details) - USD ($)
 3 Months Ended 9 Months Ended
Apr. 08, 2022
Aug. 10, 2020
Sep. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Jun. 30, 2022
Sep. 30, 2023
Sales Agreement              
Shareholders' equity              
Remaining amount under the Sales Agreement             $ 197,360,000
Sales Agreement | Maximum              
Shareholders' equity              
Aggregate offering price of ADS shares under At The Market sales agreement   $ 200,000,000          
2022 Sales Agreement              
Shareholders' equity              
Remaining amount under the Sales Agreement             $ 186,067,867
Issuance of shares upon completion of public offering, net of issuance costs (in shares)             3,854,496
Sold shares represented by American Depositary Shares (in shares)             642,416
Net proceeds             $ 596,716
2022 Sales Agreement | Maximum              
Shareholders' equity              
Aggregate offering price of ADS shares under At The Market sales agreement $ 200,000,000            
Common stock              
Shareholders' equity              
Issuance of shares upon completion of public offering, net of issuance costs (in shares)     3,300,000   4,954,854    
Number of ordinary shares sold (in shares)       554,496   35,134,182