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Unsecured Promissory Notes and Warrants (Details Narrative) (10-K) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Jun. 07, 2016
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Number of warrants issued to purchase of shares of common stock       333,332 906
Exercise price per share       $ 0.37 $ 0.45
Legal fees $ 9        
Amortization of debt discount   $ 34 $ 26 $ 116 $ 53
Interest expense   86 66 302 172
Warrants [Member]          
Legal fees 4        
Lambda Investors, LLC [Member]          
Due to related party       300  
Lambda [Member]          
Interest expense related party       33 19
Entities Controlled by Member of Management [Member]          
Due to related party       30  
Entities Controlled by Member of Management [Member] | Lambda Investors, LLC [Member]          
Due to related party       30  
Entities Controlled by Member of Management [Member] | Lambda [Member]          
Interest expense related party   $ 1 $ 8 3 2
Majority Shareholder [Member]          
Due to related party       300  
Note Holders [Member]          
Interest expense       133 77
Interest paid       195  
Accrued expenses       14  
Note and Warrant Purchase Agreement [Member]          
Gross proceeds from unsecured promissory notes and warrants $ 1,187        
Percentage of accrues interest rate per annum 11.00%        
Note repayable date Jun. 07, 2019        
Legal fees $ 13        
Proceeds from warrant agreement 1,187        
Proceeds from warrants 393        
Unsecured promissory notes $ 794        
Amortization of debt discount       $ 116 $ 53
Note and Warrant Purchase Agreement [Member] | Investors [Member]          
Number of warrants issued to purchase of shares of common stock 2,400,000        
Exercise price per share $ 0.30        
Warrants exercisable term 5 years