Quarterly report pursuant to Section 13 or 15(d)

SALE OF COMMON STOCK (Details Narrative)

v3.21.2
SALE OF COMMON STOCK (Details Narrative) - USD ($)
1 Months Ended 2 Months Ended 3 Months Ended 6 Months Ended
May 14, 2021
Apr. 19, 2021
Feb. 09, 2021
Jan. 11, 2021
Sep. 04, 2020
Apr. 08, 2020
Feb. 11, 2020
Feb. 07, 2020
Jan. 16, 2020
Nov. 14, 2019
Aug. 20, 2019
Aug. 09, 2021
Feb. 29, 2020
Feb. 28, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Class of Stock [Line Items]                                        
Value of shares issued                                   $ 1,895,000    
Preferred stock deemed dividend                               $ 1,260,000 $ 1,260,000
Proceeds from the exercise of warrants                                     2,000 7,474,000
Warrant deemed dividend                                 $ 451,000
Warrants from Feb 2020 Financing [Member]                                        
Class of Stock [Line Items]                                        
Exercised price (in dollars per share)                             $ 0.57 $ 0.57 $ 0.57 $ 0.57 $ 0.57 $ 0.57
Number of exercised warrants                             10,800,000       3,400 10,800,000
Proceeds from the exercise of warrants                             $ 6,200,000       $ 2,000 $ 6,200,000
Warrants from Nov 2019 Financing [Member]                                        
Class of Stock [Line Items]                                        
Exercised price (in dollars per share)                             $ 0.57   $ 0.57 $ 0.57   $ 0.57
Number of exercised warrants                             2,300,000         2,300,000
Proceeds from the exercise of warrants                             $ 1,300,000         $ 1,300,000
Warrant deemed dividend                         $ 500,000              
Series B Preferred Stock [Member]                                        
Class of Stock [Line Items]                                        
Value of shares issued                                      
Preferred stock deemed dividend                                      
Number of shares converted (in shares)                                   5,313    
Subsequent Event [Member]                                        
Class of Stock [Line Items]                                        
Net proceeds                       $ 8,400,000                
Purchase Agreement 2021 [Member]                                        
Class of Stock [Line Items]                                        
Number of shares issued (in shares)                                     2,800,000  
Net proceeds                                     $ 3,300,000  
Purchase Agreement 2021 [Member] | Lincoln Park Capital Fund, LLC [Member]                                        
Class of Stock [Line Items]                                        
Commitment to purchase shares under agreement $ 80,000,000                                      
Number of shares issued (in shares) 1,280,000                                      
Value of shares issued $ 1,600,000                                      
Underwriting Agreement [Member] | Common Class A [Member]                                        
Class of Stock [Line Items]                                        
Sale of stock, price (in dollars per share)               $ 0.57                        
Number of units sold               3,837,000                        
Underwriting Agreement [Member] | Common Class B [Member]                                        
Class of Stock [Line Items]                                        
Sale of stock, price (in dollars per share)               $ 1,000                        
Number of units sold               5,313                        
Conversion price (in dollars per share)               $ 0.57                        
Number of shares of common stock convertible               1,754.386                        
Number of warrants issued               1,754.386                        
Exercised price (in dollars per share)               $ 0.57                        
Warrant term               5 years                        
Underwriting Agreement [Member] | Alliance Global Partners [Member]                                        
Class of Stock [Line Items]                                        
Number of shares issued (in shares)     58,333,334 50,000,000                   14,550,000            
Net proceeds     $ 65,000,000.0 $ 36,900,000                   $ 14,800,000            
Sale of stock, price (in dollars per share)     $ 1.20 $ 0.80                   $ 1.10            
Cash fee     7.00% 7.00%                                
Underwriting discount     $ 4,900,000 $ 2,800,000                   $ 1,100,000            
Offering expenses     $ 100,000 $ 300,000                   $ 100,000            
Underwriting Agreement [Member] | Alliance Global Partners [Member] | Class A Units [Member]                                        
Class of Stock [Line Items]                                        
Number of shares issued (in shares)                   547,420                    
Sale of stock, price (in dollars per share)                   $ 1.94                    
Underwriting Agreement [Member] | Alliance Global Partners [Member] | Class B Units [Member]                                        
Class of Stock [Line Items]                                        
Number of shares issued (in shares)                   7,938                    
Sale of stock, price (in dollars per share)                   $ 1,000                    
Underwriting Agreement [Member] | Alliance Global Partners [Member] | Warrants [Member] | Class B Units [Member]                                        
Class of Stock [Line Items]                                        
Exercised price (in dollars per share)                   $ 1.94                    
Warrant term                   5 years                    
Number of warrants to purchase to common stock per unit                   515.464                    
Underwriting Agreement [Member] | Alliance Global Partners [Member] | Common Warrants [Member] | Class B Units [Member]                                        
Class of Stock [Line Items]                                        
Exercised price (in dollars per share)                   $ 1.94                    
Warrant term                   12 months                    
Number of warrants to purchase to common stock per unit                   257.732                    
Value of securities traded to trigger exercise of warrants                   $ 9,000,000                    
Underwriting Agreement [Member] | Alliance Global Partners [Member] | Common Class A And Class B [Member]                                        
Class of Stock [Line Items]                                        
Net proceeds             $ 6,500,000                          
Underwriting discount             500,000                          
Offering expenses             $ 500,000                          
Underwriting discount percentage             7.00%                          
Underwriting Agreement [Member] | Alliance Global Partners [Member] | Series B Preferred Stock [Member]                                        
Class of Stock [Line Items]                                        
Preferred stock deemed dividend             $ 1,300,000                          
Underwriting Agreement [Member] | Alliance Global Partners [Member] | Series A Preferred Stock [Member] | Class B Units [Member]                                        
Class of Stock [Line Items]                                        
Conversion price (in dollars per share)                   $ 1.94                    
Number of shares of common stock convertible                   515.464                    
Sales Agreement [Member] | Alliance Global Partners [Member]                                        
Class of Stock [Line Items]                                        
Number of shares issued (in shares)                                     25,200,000  
Offering price per agreement   $ 170,000,000.0     $ 100,000,000 $ 50,000,000.0                            
Commission to agent           3.00%                            
Gross proceeds from stock issuance                                     $ 26,300,000  
Sales Agreement [Member] | Alliance Global Partners [Member] | Subsequent Event [Member]                                        
Class of Stock [Line Items]                                        
Number of shares issued (in shares)                       11,000,000.0                
Gross proceeds from stock issuance                       $ 8,400,000                
Purchase Agreement 2019 [Member]                                        
Class of Stock [Line Items]                                        
Number of shares issued (in shares)                                       464,471
Net proceeds                                       $ 300,000
Percentage of issuance by an issuer of common stock                 19.90%                      
Purchase Agreement 2019 [Member] | Lincoln Park Capital Fund, LLC [Member]                                        
Class of Stock [Line Items]                                        
Commitment to purchase shares under agreement                     $ 15,000,000                  
Number of shares issued (in shares)                     35,529                  
Value of shares issued                     $ 200,000