Quarterly report pursuant to Section 13 or 15(d)

Stockholders' equity - Additional information (Detail)

v3.20.4
Stockholders' equity - Additional information (Detail) - USD ($)
6 Months Ended
Oct. 06, 2020
Dec. 31, 2020
Unrecognised share based compensation expense   $ 1,393,000
IPO [Member]    
Sale of Stock, Number of Shares Issued in Transaction 2,666,644  
Sale of stock issue price per share $ 3.10  
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 559,162 559,162
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   281,581