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Nature of the business (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Oct. 14, 2021
Oct. 01, 2021
Net loss $ 8,533 $ 7,720 $ 29,110 $ 16,859      
Accumulated deficit 108,215   108,215   $ 79,105    
Securities aggregate price           $ 200,000  
Cash and cash equivalents $ 27,078 $ 56,243 $ 27,078 $ 56,243 $ 49,229    
Open Market Sale | Maximum              
Securities aggregate price             $ 75,000