Quarterly report pursuant to Section 13 or 15(d)

Stockholders equity (Details)

v3.22.2
Stockholders equity (Details) - American Depository Shares (ADSs) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Jul. 05, 2022
Jun. 30, 2022
Apr. 08, 2022
Aug. 10, 2020
Apr. 30, 2022
Jun. 30, 2022
Jun. 30, 2022
Sales Agreement              
Shareholders' equity              
Remaining amount under the Sales Agreement (in shares)             $ 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 (in shares)             $ 189,673,500
Sold shares represented by American Depositary Shares (in shares)   71,965       5,927,662  
Number of ordinary shares sold (in shares)           35,565,972  
Number of ordinary shares issued (in shares) 431,790            
Gross proceeds         $ 10,029,000    
2022 Sales Agreement | Maximum              
Shareholders' equity              
Aggregate offering price of ADS shares under At The Market sales agreement     $ 200,000,000