Quarterly report pursuant to Section 13 or 15(d)

SALE OF COMMON STOCK (Details Narrative)

v3.19.2
SALE OF COMMON STOCK (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended
Dec. 13, 2018
Dec. 11, 2018
Dec. 07, 2018
Oct. 18, 2018
May 01, 2018
Sep. 28, 2017
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Number of options granted             955,100    
Gross proceeds from stock issuance             $ 420 $ 3,462  
Number of common stock issued             6,338,320   3,251,970
Series A Convertible Preferred Stock [Member]                  
Conversion of preferred stock (shares)             9,856    
Shares issue upon conversion of preferred stock (shares)             2,816,000    
Purchase Agreement and Registration Rights Agreement [Member] | Lincoln Park Capital Fund, LLC ("Lincoln Park") [Member]                  
Commitment to purchase shares under agreement       $ 15,000,000   $ 15,000,000      
Issuance of common stock for commitment to purchase       $ 245   $ 300,000      
Issuance of common stock for commitment to purchase (shares)       35,000   7,304      
Limitation on sale of common shares outstanding (percent)           19.99%      
Limitation on sale of common shares outstanding (shares)           150,000      
2016 Sales Agreement [Member] | Cowen and Company LLC [Member] | At-The-Market Offering [Member]                  
Offering price per agreement               15,000  
Gross proceeds from stock issuance               1,600  
Payment of commision               $ 50  
Number of common stock issued               35,910  
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%        
Underwriting Agreement [Member] | Alliance Global Partners Dawson And James Securitie Inc [Member] | Class A Units [Member]                  
Share price (in dollars per share)     $ 3.50            
Number of common shares per unit     1            
Number of warrants to purchase to common stock per unit     1            
Underwriting Agreement [Member] | Class A Units [Member] | Alliance Global Partners Dawson And James Securitie Inc [Member]                  
Issuance of common stock and common stock warrants in December 2018 (in shares)     861,710            
Number of options granted     642,856            
Number of options granted, term     45 days            
Number of warrants granted     642,856            
Underwriting Agreement [Member] | Class B Units [Member] | Alliance Global Partners Dawson And James Securitie Inc [Member]                  
Issuance of Series A Convertible preferred stock and common stock warrants in December 2018 (in shares)     11,984            
Share price (in dollars per share)     $ 1,000            
Number of warrants to purchase to common stock per unit     285.7143            
Number of convertible preferred stock per unit     1            
Warrants expiration period     5 years            
Conversion price per share     $ 3.50            
Underwriting Agreement [Member] | Public Offering [Member] | Class A Units [Member] | Alliance Global Partners Dawson And James Securitie Inc [Member]                  
Net proceeds from issuance of common stock   $ 13,600              
Underwriting discount   $ 1,100              
Underwriting discount per share (in dollars per share)   $ 0.24              
Discount to the public offering price   7.00%              
Underwriting discount and other offering expenses   $ 400              
Underwriting Agreement [Member] | Over-Allotment Option [Member] | Alliance Global Partners Dawson And James Securitie Inc [Member]                  
Number of shares issued 250,000                
Net proceeds from issuance of common stock $ 800                
Underwriting discount $ 100                
Underwriting discount per share (in dollars per share) $ 0.24                
Underwriting Agreement [Member] | Over-Allotment Option [Member] | Class A Units [Member] | Alliance Global Partners Dawson And James Securitie Inc [Member]                  
Number of shares issued   640,000              
Net proceeds from issuance of common stock   $ 6              
2017 Purchase Agreement [Member] | Lincoln Park Capital Fund, LLC ("Lincoln Park") [Member]                  
Number of shares issued             63,000    
Net proceeds from issuance of common stock             $ 1,800    
Payment of commision             $ 45,000    
2018 Purchase Agreement [Member] | Lincoln Park Capital Fund, LLC ("Lincoln Park") [Member]                  
Number of shares issued             227,000    
Gross proceeds from stock issuance             $ 400    
Limitation on sale of common shares outstanding (percent)             19.99%    
Limitation on sale of common shares outstanding (shares)             262,000