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Organization and Business - Narrative (Details)
1 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Jan. 22, 2021
USD ($)
shares
Jan. 19, 2021
USD ($)
shares
Jul. 27, 2020
USD ($)
shares
Jun. 08, 2020
USD ($)
shares
May 15, 2020
USD ($)
Apr. 10, 2020
USD ($)
Apr. 02, 2020
USD ($)
shares
Mar. 27, 2020
USD ($)
shares
Mar. 20, 2020
USD ($)
shares
Mar. 31, 2021
USD ($)
Jan. 31, 2021
USD ($)
Apr. 30, 2020
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
patent
shares
Sep. 30, 2020
USD ($)
Dec. 31, 2020
shares
Aug. 19, 2021
shares
Aug. 18, 2021
shares
Aug. 11, 2021
shares
Aug. 10, 2021
shares
May 28, 2021
USD ($)
Jan. 07, 2021
shares
Jan. 06, 2021
shares
Debt Instrument [Line Items]                                              
Number of issued patents | patent                           18                  
Number of pending patents | patent                           7                  
Shares authorized amount (in shares) | shares 5,681,817 13,333,334 21,500,000 12,222,222     1,400,285 3,115,001 3,931,428                            
Sale of stock, consideration received on transaction $ 6,250,000 $ 8,000,000 $ 10,750,000 $ 5,500,000     $ 245,050 $ 545,125 $ 688,000                            
Proceeds from PPP and SBA loans                           $ 0 $ 1,258,900                
Common stock shares authorized (in shares) | shares                           200,000,000   100,000,000 200,000,000 150,000,000 200,000,000 150,000,000   150,000,000 100,000,000
Money market fund payments                   $ 2,000,000                          
Interest-bearing account                   $ 10,000,000                          
Net working capital                           $ 13,100,000                  
Proceeds from sale of common stock, net                     $ 14,300,000   $ 16,500,000 13,137,500 $ 16,432,190                
Money Market Funds and Marketable Debt and Equity Securities                                              
Debt Instrument [Line Items]                                              
Deposits                           $ 9,000,000                  
Sales Agreement                                              
Debt Instrument [Line Items]                                              
Sale of stock, maximum amount to be sold                                         $ 35,000,000    
Commission fee, percent                                         3.00%    
Paycheck Protection Program Loan                                              
Debt Instrument [Line Items]                                              
Proceeds from PPP and SBA loans           $ 1,100,000           $ 1,100,000                      
Economic Injury Disaster Loan                                              
Debt Instrument [Line Items]                                              
Proceeds from PPP and SBA loans         $ 149,900                                    
Accounts Receivable | Customer Concentration Risk | Yahoo, Proper Media and Google                                              
Debt Instrument [Line Items]                                              
Percentage of concentration risk                           44.00%   38.40%