Annual report pursuant to Section 13 and 15(d)

SUBSEQUENT EVENTS (Details Narrative)

v3.20.1
SUBSEQUENT EVENTS (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 2 Months Ended 3 Months Ended 12 Months Ended
Mar. 18, 2020
Feb. 25, 2020
Feb. 07, 2020
Nov. 14, 2019
Feb. 28, 2020
Mar. 31, 2020
Mar. 23, 2020
Dec. 31, 2019
Dec. 31, 2018
Number of options granted               95,517 10,206
Exercise price (in dollars price per share)               $ 21.74 $ 375.15
Proceeds from the exercise of warrants               $ 70  
Underwriting Agreement [Member] | Alliance Global Partners [Member]                  
Percentage of underwriting discount       7.00%          
Offering expenses       $ 500          
Subsequent Event [Member]                  
Net proceeds             $ 29,000    
Subsequent Event [Member] | Warrants from Feb 7 Financing [Member]                  
Number of exercised warrants           10,800,000      
Exercised price (in dollars per share)           $ 0.57      
Proceeds from the exercise of warrants           $ 6,200      
Subsequent Event [Member] | Warrants from Nov 2019 Financing [Member]                  
Number of exercised warrants           2,300,000      
Exercised price (in dollars per share)     $ 0.57     $ 0.57      
Proceeds from the exercise of warrants           $ 1,300      
Subsequent Event [Member] | Series B Convertible Preferred Stock [Member]                  
Number of shares converted (in shares)         5,313        
Subsequent Event [Member] | Underwriting Agreement [Member] | Alliance Global Partners [Member]                  
Sale of stock, price (in dollars per share)         $ 1.10        
Percentage of underwriting discount         7.00%        
Underwriting discount         $ 1,100        
Net proceeds         14,800        
Offering expenses         $ 100        
Number of shares issued (in shares)         14,550,000        
Subsequent Event [Member] | Underwriting Agreement [Member] | Alliance Global Partners [Member] | Public Offering [Member]                  
Percentage of underwriting discount     7.00%            
Underwriting discount     $ 500            
Net proceeds     6,700            
Offering expenses     $ 300            
Subsequent Event [Member] | Underwriting Agreement [Member] | Class A Unit [Member]                  
Number of units sold     3,837,000            
Sale of stock, price (in dollars per share)     $ 0.57            
Subsequent Event [Member] | Underwriting Agreement [Member] | Class B Unit [Member]                  
Number of units sold     5,313            
Sale of stock, price (in dollars per share)     $ 1,000            
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            
Subsequent Event [Member] | Southern Research Institute Collaboration [Member]                  
Research collaboration $ 1,300                
Subsequent Event [Member] | Exercise Price $0.40 [Member]                  
Number of options granted   343,500              
Exercise price (in dollars price per share)   $ 0.40              
Exercisable term   10 years              
Subsequent Event [Member] | Exercise Price $0.40 [Member] | Vesting 12 Months from Grant Date [Member]                  
Vesting percentage   33.33%              
Vesting period   12 months              
Subsequent Event [Member] | Exercise Price $0.40 [Member] | Vesting Monthly Thereafter [Member]                  
Vesting percentage   2.78%              
Vesting period   24 months              
Subsequent Event [Member] | Exercise Price $0.50 [Member]                  
Number of options granted   207,000              
Exercise price (in dollars price per share)   $ 0.50              
Exercisable term   10 years              
Subsequent Event [Member] | Exercise Price $0.50 [Member] | Vesting 12 Months from Grant Date [Member]                  
Vesting percentage   33.33%              
Vesting period   12 months              
Subsequent Event [Member] | Exercise Price $0.50 [Member] | Vesting Monthly Thereafter [Member]                  
Vesting percentage   2.78%              
Vesting period   24 months