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Nature of the business and basis of presentation (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Oct. 01, 2021
Net loss $ 8,924 $ 5,241 $ 20,577 $ 9,139    
Accumulated deficit 99,682   99,682   $ 79,105  
Cash and cash equivalents $ 34,649 $ 59,829 $ 34,649 $ 59,829 $ 49,229  
Open Market Sale | Maximum            
Securities aggregate price           $ 75,000