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Stockholders' Equity - Incentive Plans (Details)
 1 Months Ended 9 Months Ended 12 Months Ended
Jan. 09, 2014
installment
shares
Jan. 31, 2022
USD ($)
shares
Sep. 30, 2023
USD ($)
shares
Sep. 30, 2022
USD ($)
shares
Dec. 31, 2021
shares
Maximum          
Incentive plans          
Expiration period     10 years    
2013 Equity Incentive Plan          
Incentive plans          
Period from date of termination that any vested options shall expire 90 days        
Expiration period 10 years        
Unrecognized compensation expense related to unvested options | $     $ 4,825,031    
Period for unrecognized compensation expense related to unvested options yet has not been recognized     2 years 8 months 12 days    
Intrinsic value of options exercised | $     $ 82,093    
Cash proceeds from exercise of stock options | $     $ 115,498    
Shares issued from exercise of stock options     100,060 0  
Fair value of shares vested | $     $ 1,402,470 $ 2,699,940  
Authorized shares          
Common stock authorized 1,000,000        
Automatic increase in number of shares reserved for issuance as a percentage of the total common stock outstanding at the end of the prior year 3.00%        
Increase in number of shares of common stock     2,619,622    
Maximum percentage of shares of common stock issued and outstanding on the immediately preceding fiscal year, or such lesser number of shares as determined by the board of directors or the compensation committee     4.00%    
Options granted     2,451,050    
2013 Equity Incentive Plan | Stock options vesting based on performance          
Incentive plans          
Percent of shares subject to option grant that will vest   50.00%      
Maximum fair value of option excluded from the unrecognized compensation expense | $     $ 825,353    
2013 Equity Incentive Plan | Stock options vesting based on performance | Non-executive employees          
Incentive plans          
Maximum fair value of option excluded from the unrecognized compensation expense | $   $ 113,520      
Authorized shares          
Options granted   141,900      
2013 Equity Incentive Plan | Stock options vesting based on performance | Newly hired employees          
Authorized shares          
Options granted       584,200 584,200
2013 Equity Incentive Plan | Upon first anniversary of start date          
Incentive plans          
Percent of shares subject to option grant that will vest 25.00%        
2013 Equity Incentive Plan | Each month after the first anniversary          
Incentive plans          
Number of monthly installments | installment 36        
2013 Equity Incentive Plan | Vesting upon FDA Approval | Stock options vesting based on performance          
Incentive plans          
Percent of shares subject to option grant that will vest   50.00%      
Common Stock | 2013 Equity Incentive Plan          
Authorized shares          
Common stock authorized     11,681,878    
Shares available for future grants     2,592,669    
Maximum number of shares that may be issued pursuant to exercise of incentive stock 20,000,000