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Stock-based compensation - Narrative (Details) - USD ($)
9 Months Ended
Apr. 14, 2022
Sep. 30, 2022
Sep. 30, 2021
Nov. 30, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Common shares reserved for future issuance (in shares)   16,965,849    
Period over which shares reserved for future issuance will increase   9 years    
Additional shares reserved for issuance, percentage   5.00%    
Options granted (in shares)   1,500,081    
Weighted average grant date fair value, stock options granted (in usd per share)   $ 4.11 $ 0.36  
Fair value of stock options vested   $ 3,100,000 $ 812,329  
Warrants, exercise price (in usd per share)   $ 7.91    
Warrants outstanding (in shares)   17,920,898    
Public Warrants as converted to Common Shares (Note 8)        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Expected dividend yield   0.00% 0.00%  
2022 Plan        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Options granted (in shares)   1,500,081    
2020 Plan        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Options granted (in shares)   4,341,966    
Common stock warrants        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Warrants expired (in shares) 617,972      
Warrants, exercise price (in usd per share) $ 1.75      
Warrants outstanding (in shares)   0    
Preferred stock warrants        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Warrants, exercise price (in usd per share)       $ 2.16
Warrants outstanding (in shares)   3,247,637    
Warrants, number of shares issuable (in shares)   2,889,282   3,247,637