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Notes Payable - Additional Information (Details) - USD ($)
1 Months Ended 2 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Feb. 28, 2021
Aug. 31, 2020
Feb. 29, 2020
Aug. 31, 2019
Feb. 28, 2019
Oct. 31, 2018
Feb. 28, 2021
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Jun. 30, 2021
Feb. 15, 2021
Jun. 30, 2020
May 07, 2020
Mar. 31, 2016
Debt Instrument [Line Items]                                  
Payment on principle amount of note   $ 1,554,173                     $ 3,027,000        
Sale of common stock, net of placement costs,shares 1,818,181   1,487,601                     42,672      
Settlement of accrued interest through issuance of common shares                         $ 123,000 $ 123,066      
Sale of common stock, net of placement costs                   $ 11,969,000 $ 6,817,000 $ 1,619,000   139,964      
Gain (loss) on repayment of interest on convertible notes payable                           $ (16,898)      
Exercise of warrants to purchase number of shares of common stock     613,791,000           613,791,000                
Exercise Price $ 2.40   $ 2.40           $ 2.40 $ 2.40     $ 2.40        
Proceeds from exercise of common stock warrants                 $ 1,473,098       $ 4,174,018   $ 2,000    
Gain on note settlement   $ 64,757                              
Senior Secured Convertible Notes due August 15 2018                                  
Debt Instrument [Line Items]                                  
Stated interest rate               8.00%                 10.00%
Principal amount                                 $ 8,000,000
Payment on principle amount of note               $ 7,400,000                  
Senior Secured Convertible Notes due August 15, 2023                                  
Debt Instrument [Line Items]                                  
Conversion price               $ 11.434                 $ 170.00
Interest Note and Accrued Interest                                  
Debt Instrument [Line Items]                                  
Semi-annual interest payments       $ 122,000 $ 112,000 $ 109,000 $ 78,000                    
Promissory Note | Paycheck Protection Program                                  
Debt Instrument [Line Items]                                  
Principal amount                               $ 579,330