Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Additional Information (Detail)

v3.23.1
Significant Accounting Policies - Additional Information (Detail) - USD ($)
 3 Months Ended
Apr. 30, 2015
Mar. 31, 2023
Mar. 31, 2022
Mar. 28, 2023
Summary Of Significant Accounting Policies [Line Items]        
Revenue   $ 96,676 $ 215,961  
Research and development expense, total   3,078,524 3,527,146  
Liability for unrecognized tax benefits   0    
Interest or penalties for uncertain tax positions   $ 0 $ 0  
Antidilutive securities excluded from computation of earnings per share, amount   12,890,622 5,682,499  
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 0.40
Warrants Issued to Investors [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Antidilutive securities excluded from computation of earnings per share, amount   9,916,666 3,284,789  
Warrants Issued to Investors [Member] | Expiring at March 1 2024 [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Antidilutive securities excluded from computation of earnings per share, amount   1,666,666    
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 10.00    
Warrants Issued to Investors [Member] | Expiring on March 28 2029 [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Antidilutive securities excluded from computation of earnings per share, amount   8,250,000    
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 0.40    
Employee Stock Purchase Plan [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Common stock purchase price discount percentage 85.00% 15.00%    
Product Development Projects Revenue [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Revenue   $ 96,676 $ 215,961