Quarterly report pursuant to Section 13 or 15(d)

Stockholders' equity - Additional information (Detail)

v3.22.2.2
Stockholders' equity - Additional information (Detail)
$ / shares in Units, $ in Millions
 12 Months Ended
Sep. 15, 2022
$ / shares
shares
Apr. 22, 2020
shares
Jun. 30, 2022
shares
Sep. 30, 2022
USD ($)
shares
Dec. 08, 2021
shares
Dec. 06, 2019
shares
$ / shares
Class of warrant or right, exercise price of warrants or rights | $ / shares $ 0.66          
Unrecognised share based compensation expense | $       $ 0.4    
Common Stock Shares Authorized     40,000,000 40,000,000    
Warrants outstanding     107,095 42,088,194    
Maximum [Member]            
Common Stock Shares Authorized         40,000,000  
Minimum [Member]            
Common Stock Shares Authorized         10,000,000  
Common Stock [Member]            
Warrants convertible into shares of common stock on exercise   107,095        
Cashless exercise of purchase warrants (In shares)   37,417 37,417      
Purchase warrants [Member]            
Class of warrant or right, exercise price of warrants or rights | $ / shares           $ 10.5
Warrants convertible into shares of common stock on exercise           214,190
Number of series of warrants issued           4
Expiry date of warrants           Dec. 06, 2024
IPO [Member]            
Sale of stock number of shares issued in the transaction 17,637,843          
Sale of stock issue price per share | $ / shares $ 0.59          
Issue of common stock and warrant price per share 0.60%          
Class of warrants or rights issue price per unit | $ / shares $ 0.01          
IPO [Member] | Series 2 Warrants [Member]            
Class of warrant or rights issued during period 29,809,471          
Class of warants or rights number of shares excercisable for each unit of warrant or right 1          
IPO [Member] | Pre Funded Warrants [Member]            
Class of warrant or right, exercise price of warrants or rights | $ / shares $ 0.0001          
Class of warrant or rights issued during period 12,171,628          
Class of warants or rights number of shares excercisable for each unit of warrant or right 1