Quarterly report pursuant to Section 13 or 15(d)

Stockholders' equity - Additional information (Detail)

v3.22.4
Stockholders' equity - Additional information (Detail)
$ / shares in Units, $ in Thousands
 3 Months Ended
Oct. 27, 2022
$ / shares
shares
Oct. 17, 2022
shares
Sep. 15, 2022
$ / shares
shares
Apr. 22, 2020
shares
Sep. 30, 2022
USD ($)
shares
Dec. 31, 2022
USD ($)
shares
Dec. 07, 2022
shares
Jun. 30, 2022
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 | $           $ 300        
Common Stock Shares Authorized           160,000,000   160,000,000    
Warrants outstanding         42,088,194 39,916,566   107,095    
Allocated Share Based Compensation Expenses Overstated | $         $ 167          
Maximum [Member]                    
Common Stock Shares Authorized             160,000,000   40,000,000  
Minimum [Member]                    
Common Stock Shares Authorized             40,000,000   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            
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
Pre-funded warrants [Member]                    
Class Of Warrants Or Rights Excercised During The Period 166,667 2,004,961                
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              
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              
Pre-funded warrants [Member]                    
Sale of stock number of shares issued in the transaction         12,171,628          
Class of warrant or right, exercise price of warrants or rights | $ / shares $ 0.0001