XML 35 R22.htm IDEA: XBRL DOCUMENT v3.21.2
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
3 Months Ended 9 Months Ended
Apr. 05, 2021
USD ($)
Mar. 30, 2021
$ / shares
shares
Dec. 15, 2020
USD ($)
Dec. 11, 2020
$ / shares
shares
Jun. 30, 2020
shares
May 04, 2020
USD ($)
$ / shares
shares
Apr. 29, 2020
USD ($)
$ / shares
shares
Dec. 19, 2019
shares
Sep. 30, 2021
USD ($)
$ / shares
shares
Jun. 30, 2021
shares
Sep. 30, 2020
USD ($)
shares
Jun. 30, 2020
shares
Sep. 30, 2021
USD ($)
segment
$ / shares
shares
Sep. 30, 2020
USD ($)
shares
Dec. 31, 2020
USD ($)
$ / shares
Oct. 02, 2020
USD ($)
Jul. 22, 2020
USD ($)
Apr. 29, 2019
$ / shares
Significant Accounting Policies Disclosure [Line Items]                                    
Sale of stock, shelf registration maximum equity offering price | $                               $ 200,000,000    
Exercise price of warrants or rights (in dollars per share) | $ / shares             $ 0.10                      
Expected term           5 years                        
Number of shares issued per warrant (in shares)               1.2                    
Issuance of common stock (in shares)             12,230,418                      
Proceeds from issuance of common stock and warrants | $             $ 1,200,000           $ 34,500,000 $ 2,370,012        
Preferred stock, par or stated value per share (in dollars per share) | $ / shares             $ 0.0001   $ 0.0001       $ 0.0001   $ 0.0001      
Proceeds from issuance of preferred stock and warrants | $           $ 22,600,000             $ 0 22,560,994        
Proceeds from issuance of preferred stock and warrants, net. | $           $ 19,200,000                        
Warrants, accumulated gross unrealized gain | $                 $ 7,000       7,000          
Change in fair value of warrant liabilities | $                 0   $ 0   0 (2,637,500)        
Warrant inducement expense | $                 0   0   0 7,157,887        
General and administrative expense | $                 $ 2,386,461   $ 1,890,492   $ 7,146,432 $ 9,220,020        
Antidilutive securities excluded from computation of earnings per share (in shares)                 46,300,000   57,100,000   46,305,829 57,114,096        
Number of operating segments | segment                         1          
Patent Costs                                    
Significant Accounting Policies Disclosure [Line Items]                                    
General and administrative expense | $                 $ 98,000   $ 108,000   $ 329,000 $ 300,000        
Warrant                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Exercise price of warrants or rights (in dollars per share) | $ / shares                                   $ 2.13
Expected term                                   5 years 6 months
Number of securities called by warrants or rights (in shares)               5,441,023 1,847,309       1,847,309          
Number of warrants purchased (in shares)                 1,539,424       1,539,424          
Placement Agent Warrants                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Exercise price of warrants or rights (in dollars per share) | $ / shares                                   $ 2.53
Expected term                                   5 years
Exchange Warrants                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Warrant inducement expense | $                     $ 0   $ 0 $ 7,200,000        
Private Placement | Series A Preferred Stock                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Exercise price of warrants or rights (in dollars per share) | $ / shares           $ 58.94     $ 0.5894       $ 0.5894          
Expected term             5 years                      
Number of securities called by warrants or rights (in shares)           382,779                        
Warrant issuable per investment unit (in shares)             1                      
Broker Warrants                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Units warrant units issued (in shares)           8,112                        
Broker Warrants | Series A Preferred Stock                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Number of securities called by warrants or rights (in shares)           10,899                        
Public Stock Offering                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Number of shares issued in transaction (in shares)   30,000,000   46,153,847                            
Shares issued, price per share (in usd per share) | $ / shares   $ 1.00   $ 0.65                            
Consideration received on transaction | $ $ 31,500,000   $ 32,000,000                              
Public Stock Offering | Officers And Board Of Directors Chairman                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Number of shares issued in transaction (in shares)       446,153                            
Over-Allotment Option                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Number of shares issued in transaction (in shares)   4,500,000   6,923,077                            
Sale of stock, option period   30 days   30 days                            
April 2021 Offering | Chief Executive Officer, Chief Financial Officer, And Chairman Of Board Of Directors                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Number of shares issued in transaction (in shares)   450,000                                
Warrant                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Warrant liabilities outstanding | $                 $ 0       $ 0   $ 0      
Series A Preferred Stock | Private Placement                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Number of securities called by warrants or rights (in shares)           382,779                        
Shares issuable per investment unit (in shares)             1                      
Number of shares issued in transaction (in shares)           382,779                        
Preferred stock, par or stated value per share (in dollars per share) | $ / shares           $ 0.0001                        
Common shares issuable upon conversion (in shares)           38,277,900                        
Series A Preferred Stock | Broker Warrants                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Common shares issuable upon conversion (in shares)           2,712,300                        
SunTrust Robinson Humphrey                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Sale of stock, ATM maximum equity offering price | $                                 $ 40,000,000  
Common Stock                                    
Significant Accounting Policies Disclosure [Line Items]                                    
Issuance of common stock (in shares)                 2,517,211 34,500,000 3,285,543 42,695,948            
Conversion of preferred stock to common stock (in shares)         38,277,900             38,277,900