Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Additional Information (Detail)

v3.23.3
Significant Accounting Policies - Additional Information (Detail)
 3 Months Ended 9 Months Ended
Aug. 15, 2023
shares
Apr. 30, 2015
Sep. 30, 2023
USD ($)
$ / shares
shares
Sep. 30, 2022
USD ($)
shares
Sep. 30, 2023
USD ($)
$ / shares
shares
Sep. 30, 2022
USD ($)
shares
Aug. 16, 2023
shares
Mar. 28, 2023
$ / shares
Summary Of Significant Accounting Policies [Line Items]                
Revenue | $     $ 168,708 $ 223,201 $ 382,517 $ 672,133    
Research and development expense, total | $     2,460,123 2,885,830 8,418,779 9,622,886    
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     597,020 312,319 597,020 312,319    
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares               $ 8.00
Shares issued prior to reverse stock split 92,069,632              
Shares outstanding prior to reverse stock split 92,069,632              
Shares outstanding after reverse stock split             4,601,654  
Cash in lieu of fractional shares | $         $ 6,250      
Reverse stock split, description         1-for-20      
Reverse stock split, conversion ratio 20   20   20      
Warrants Issued to Investors [Member]                
Summary Of Significant Accounting Policies [Line Items]                
Antidilutive securities excluded from computation of earnings per share, amount     495,833 164,239 495,833 164,239    
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 1.66   $ 1.66      
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         83,333      
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     200.00   $ 200.00      
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         412,500      
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 1.66   $ 1.66      
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 | $     $ 168,708 $ 223,201 $ 382,517 $ 672,133