Quarterly report pursuant to Section 13 or 15(d)

Stockholders equity - Offerings (Details)

v3.23.2
Stockholders equity - Offerings (Details) - USD ($)
 3 Months Ended 6 Months Ended
Apr. 08, 2022
Aug. 10, 2020
Mar. 31, 2023
Jun. 30, 2022
Jun. 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         $ 186,513,100
Issuance of shares upon completion of public offering, net of issuance costs (in shares)         554,496
Sold shares represented by American Depositary Shares (in shares)         92,416
Net proceeds         $ 173,430
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)     554,496 35,134,182