Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Summary of Significant Accounting Policies - Additional information (Detail)

v3.20.2
Basis of Presentation and Summary of Significant Accounting Policies - Additional information (Detail) - USD ($)
3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Jun. 30, 2020
Summary Of Significant Accounting Policies [Line Items]      
Antidilutive securities excluded from the computation of earnings per share 145,421 65,852  
Grant Receivable on research and development expenditures [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Concentration risk percentage 43.50%    
Fair Value, Recurring [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Financial assets at fair value $ 0   $ 0
Financial liabilities at fair value $ 0   $ 0