Annual report pursuant to Section 13 and 15(d)

SALE OF COMMON STOCK (Details Narrative)

v3.20.1
SALE OF COMMON STOCK (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 16, 2020
Nov. 14, 2019
Aug. 20, 2019
Jul. 18, 2019
Dec. 13, 2018
Dec. 11, 2018
Dec. 07, 2018
Oct. 18, 2018
May 01, 2018
Sep. 28, 2017
Feb. 28, 2020
Mar. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Number of options granted                         95,517 10,206
Net proceeds                         $ 5,869 $ 12,714
Preferred stock deemed dividend                         2,474 3,266
Beneficial conversion feature in connection with sale of Series A Convertible preferred stock and deemed dividend                         $ 2,474 3,266
Series A Convertible Preferred Stock [Member]                            
Issuance of Series A Convertible preferred stock and common stock warrants (in shares)                         7,938  
Conversion of preferred stock (shares)                       9,856    
Shares issue upon conversion of preferred stock (shares)                       281,610    
Common Stock [Member]                            
Issuance of common stock and common stock warrants (in shares)                         547,420  
Number of shares issued                         7,938  
Offering expenses                         $ 1,045 610
Underwriting Agreement [Member] | Aegis Capital Corp. [Member]                            
Share price (in dollars per share)       $ 6.00                    
Number of shares issued       900,000                    
Net proceeds       $ 4,500                    
Underwriting discount per share (in dollars per share)       $ 0.48                    
Offering expenses       $ 500                    
Percentage of underwriting discount       8.00%                    
Issue of shares at discount       $ 400                    
Underwriting Agreement [Member] | Aegis Capital Corp. [Member] | Over-Allotment Option [Member]                            
Number of options granted, term       45 days                    
Number of shares issued       135,000                    
2019 Purchase Agreement [Member] | Lincoln Park Capital Fund, LLC [Member]                            
Commitment to purchase shares under agreement     $ 15,000                      
Number of shares issued     35,529                      
Number of shares issued, value     $ 200                      
2019 Purchase Agreement [Member] | Lincoln Park Capital Fund, LLC [Member] | Subsequent Event [Member]                            
Percentage of common stock over which is approved to be sold under agreement 19.90%                          
Purchase Agreement and Registration Rights Agreement [Member] | Lincoln Park Capital Fund, LLC ("Lincoln Park") [Member]                            
Commitment to purchase shares under agreement               $ 15,000   $ 15,000        
Issuance of common stock for commitment to purchase               $ 245   $ 300        
Issuance of common stock for commitment to purchase (shares)               3,500   731        
Limitation on sale of common shares outstanding (percent)                   19.99%        
Limitation on sale of common shares outstanding (shares)                   15,000        
2018 Purchase Agreement [Member] | Lincoln Park Capital Fund, LLC ("Lincoln Park") [Member]                            
Number of shares issued                         22,800  
Gross proceeds from stock issuance                         $ 400  
Limitation on sale of common shares outstanding (percent)                         19.99%  
Limitation on sale of common shares outstanding (shares)                         26,200  
Sales Agreement [Member] | Cowen and Company LLC [Member] | At-the-market offering [Member]                            
Offering price per agreement                 $ 9,500          
Percentage of selling commission                 3.00%          
Payment of commision                           200
Issuance of common stock under At-the-market offering                         $ 33 $ 6,900
Issuance of common stock under At-the-market offering (in shares)                         2,106 59,300
2017 Purchase Agreement [Member] | Lincoln Park Capital Fund, LLC ("Lincoln Park") [Member]                            
Number of shares issued                           12,000
Net proceeds                           $ 2,300
Payment of commision                           $ 45
Alliance Global Partners [Member] | Underwriting Agreement [Member]                            
Net proceeds   $ 7,900                        
Offering expenses   $ 500                        
Percentage of underwriting discount   7.00%                        
Alliance Global Partners [Member] | Underwriting Agreement [Member] | Subsequent Event [Member]                            
Share price (in dollars per share)                     $ 1.10      
Number of shares issued                     14,550,000      
Underwriting discount                     $ 1,100      
Offering expenses                     $ 100      
Percentage of underwriting discount                     7.00%      
Alliance Global Partners [Member] | Underwriting Agreement [Member] | Warrant [Member]                            
Warrant exercise price   $ 1.94                        
Warrants expiration period   5 years                        
Alliance Global Partners [Member] | Underwriting Agreement [Member] | Common Warrants [Member]                            
Value of securities traded to trigger exercise of warrants   $ 9,000                        
Warrant exercise price   $ 1.94                        
Warrants expiration period   12 months                        
Alliance Global Partners [Member] | Underwriting Agreement [Member] | Class A Units [Member]                            
Issuance of common stock and common stock warrants (in shares)   547,420                        
Share price (in dollars per share)   $ 1.94                        
Number of common shares per unit   1                        
Issue of shares at discount   $ 600                        
Alliance Global Partners [Member] | Underwriting Agreement [Member] | Class B Units [Member]                            
Issuance of Series A Convertible preferred stock and common stock warrants (in shares)   7,938                        
Share price (in dollars per share)   $ 1,000                        
Alliance Global Partners [Member] | Underwriting Agreement [Member] | Class B Units [Member] | Warrant [Member]                            
Number of warrants to purchase to common stock per unit   515.464                        
Alliance Global Partners [Member] | Underwriting Agreement [Member] | Class B Units [Member] | Common Warrants [Member]                            
Number of warrants to purchase to common stock per unit   257.732                        
Alliance Global Partners [Member] | Underwriting Agreement [Member] | Class B Units [Member] | Series A Convertible Preferred Stock [Member]                            
Number of convertible preferred stock per unit   1                        
Conversion price per share   $ 1.94                        
Number of shares of common stock convertible   515.464                        
Preferred stock deemed dividend   $ 2,500                        
Alliance Global Partners Dawson James Securities Inc [Member] | Underwriting Agreement [Member] | Over-Allotment Option [Member]                            
Number of shares issued         25,000                  
Net proceeds         $ 800                  
Underwriting discount         $ 100                  
Underwriting discount per share (in dollars per share)         $ 2.40                  
Alliance Global Partners Dawson James Securities Inc [Member] | Underwriting Agreement [Member] | Class A Units [Member]                            
Issuance of common stock and common stock warrants (in shares)             86,171              
Share price (in dollars per share)             $ 35              
Number of common shares per unit             1              
Number of warrants to purchase to common stock per unit             1              
Number of options granted             64,286              
Number of options granted, term             45 days              
Number of warrants granted             64,286              
Alliance Global Partners Dawson James Securities Inc [Member] | Underwriting Agreement [Member] | Class A Units [Member] | Over-Allotment Option [Member]                            
Number of shares issued           64,000                
Net proceeds           $ 6                
Alliance Global Partners Dawson James Securities Inc [Member] | Underwriting Agreement [Member] | Class A Units [Member] | Public Offering [Member]                            
Net proceeds           13,600                
Underwriting discount           $ 1,100                
Underwriting discount per share (in dollars per share)           $ 2.40                
Offering expenses           $ 400                
Percentage of underwriting discount           7.00%                
Preferred stock deemed dividend           $ 3,300                
Alliance Global Partners Dawson James Securities Inc [Member] | Underwriting Agreement [Member] | Class B Units [Member]                            
Issuance of Series A Convertible preferred stock and common stock warrants (in shares)             11,984              
Share price (in dollars per share)             $ 1,000              
Number of warrants to purchase to common stock per unit             28.5714              
Number of convertible preferred stock per unit             1              
Warrant exercise price             $ 35.00              
Warrants expiration period             5 years              
Conversion price per share             $ 35.00              
Number of shares of common stock convertible             28.5714