Quarterly report pursuant to Section 13 or 15(d)

Stockholders' equity - Additional information (Detail)

v3.21.1
Stockholders' equity - Additional information (Detail) - USD ($)
6 Months Ended
Oct. 06, 2020
Dec. 31, 2020
Apr. 30, 2021
Mar. 31, 2021
Unrecognised share based compensation expense       $ 1,159,000
IPO [Member]        
Sale of Stock, Number of Shares Issued in Transaction 2,666,644      
Sale of stock issue price per share $ 3.10   $ 4.25  
Over-Allotment Option [Member]        
Sale of Stock, Number of Shares Issued in Transaction 483,870      
Sale of stock issue price per share $ 3.10      
Pre-funded warrants [Member]        
Sale of Stock, Number of Shares Issued in Transaction   559,162    
Sale of stock issue price per share 3.09      
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 0.01      
Number of Warranrs exercised   559,162