Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Additional Information (Detail)

v3.23.2
Significant Accounting Policies - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended
Apr. 30, 2015
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2023
Jun. 30, 2022
Mar. 28, 2023
Summary Of Significant Accounting Policies [Line Items]                
Revenue   $ 117,133   $ 232,971   $ 213,809 $ 448,932  
Research and development expense, total   2,880,132   3,209,910   5,958,656 6,737,056  
Liability for unrecognized tax benefits   0       0    
Interest or penalties for uncertain tax positions   $ 0   $ 0   $ 0 $ 0  
Antidilutive securities excluded from computation of earnings per share, amount   12,260,369 12,260,369 6,212,707 6,212,707 12,260,369 6,212,707  
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   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       $ 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       $ 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   $ 117,133   $ 232,971   $ 213,809 $ 448,932