Quarterly report pursuant to Section 13 or 15(d)

SALE OF COMMON STOCK (Details Narrative)

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SALE OF COMMON STOCK (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended
May 01, 2018
Sep. 28, 2017
Apr. 13, 2017
Apr. 04, 2017
Mar. 30, 2017
May 10, 2018
Jun. 30, 2018
Jul. 01, 2018
Jun. 30, 2018
Jun. 30, 2017
Number of shares issued                 59,000  
Gross proceeds from stock issuance                 $ 3,462 $ 17,386
Offering expenses                 $ 95 $ 1,168
Purchase Agreement [Member]                    
Number of shares issued           603,294 630,000   45,000  
Gross proceeds from stock issuance           $ 1,900 $ 1,800      
Purchase Agreement [Member] | Subsequent Event [Member]                    
Number of shares issued               90,000    
Gross proceeds from stock issuance               $ 100    
Purchase Agreement [Member] | Lincoln Park Capital Fund, LLC ("Lincoln Park") [Member]                    
Number of shares issued   15,000,000                
Purchase Agreement and Registration Rights Agreement [Member] | Lincoln Park Capital Fund, LLC ("Lincoln Park") [Member]                    
Number of shares issued   73,039                
Addition number of shares issued   300,000                
Sales Agreement [Member] | Cowen and Company LLC [Member] | At-The-Market Offering [Member]                    
Number of shares issued                 359,097  
Net proceeds from issuance of common stock $ 9,500               $ 1,600  
Percentage of selling commission 3.00%                  
Net of expenses                 $ 50,000  
Underwriting Agreement [Member] | Underwriters (2017 Underwriters) [Member] | April 2017 Financing [Member]                    
Number of shares issued         1,800,000          
Net proceeds from issuance of common stock       $ 7,200            
Share price (in dollars per share)         $ 4.45          
Underwriting discount       $ 600            
Underwriting discount per share (in dollars per share)       $ 0.31            
Offering expenses       $ 200            
Percentage of underwriting discount       7.00%            
Underwriting Agreement [Member] | Underwriters (2017 Underwriters) [Member] | Over-Allotment Option [Member]                    
Number of shares issued         270,000          
April 2017 Financing [Member] | Underwriters (2017 Underwriters) [Member] | Over-Allotment Option [Member]                    
Number of shares issued     270,000              
Net proceeds from issuance of common stock     $ 1,100              
Underwriting discount     $ 100              
Underwriting discount per share (in dollars per share)     $ 0.31