v3.22.2.2
Stock-based compensation - Summary Of Stock Option Activity (Details) - Incentive Stock Options - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Jun. 30, 2022
Sep. 30, 2022
Dec. 31, 2021
Share-based compensation          
Shares, Beginning (in shares) 664   252 252  
Granted (in shares) 1,813   441    
Exercised (in shares) 0   0    
Forfeited or expired (in shares) (107)   (29)    
Shares, Ending (in shares) 2,370 664 664 2,370 252
Vested and exercisable (in shares) 822     822  
Expected to vest (in shares) 1,548     1,548  
Weighted - Average Exercise Price          
Weighted average exercise price, Beginning (in dollar per share) $ 13.40   $ 15.92 $ 15.92  
Weighted average exercise price, Granted (in dollar per share) 2.52   12.47    
Weighted average exercise price, Forfeited or expired (in dollar per share) 5.41   15.94    
Weighted average exercise price, End (in dollar per share) 5.72 $ 13.40 $ 13.40 5.72 $ 15.92
Weighted average exercise price, Vested and exercisable (in dollar per share) 4.29     4.29  
Weighted average exercise price, Expected to vest (in dollar per share) $ 6.48     $ 6.48  
Weighted - Average Remaining Contractual Term          
Weighted average remaining contractual term, Expected to vest   8 years 7 months 13 days 9 years 6 months 10 days
Aggregate Intrinsic Value          
Aggregate intrinsic value, Ending $ 0 $ 0 $ 0 $ 0 $ 0
Aggregate intrinsic value, Vested and exercisable 574     574  
Aggregate intrinsic value, Expected to vest $ 1,043     $ 1,043