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Shareholders' Equity (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Jan. 05, 2018
Dec. 21, 2016
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Feb. 29, 2016
Preferred shares authorized     100,000   100,000  
Preferred shares, par value     $ 0.01   $ 0.01  
Number of share issued     640,163      
Proceeds from issuance of common stock     $ 877    
Net share price     $ 1.47      
Warrant exercise price     $ 2.05      
Warrant liability     $ 930   $ 1,200  
Compensation expenses     100 $ 100    
Unrecognized share based compensation     $ 80      
Number of options granted          
Number of options forfeited          
Number of shares available for future grants     981,008      
Common Stock Sales Agreement [Member]            
Proceeds from issuance of common stock $ 2,500          
Registered Direct Offering [Member]            
Number of share issued   1,000,000        
Net share price   $ 1.50        
Net proceeds from offering   $ 1,320        
Warrant [Member]            
Net share price   $ 1.28 $ 1.23 $ 1.28    
Warrant [Member] | Registered Direct Offering [Member]            
Number of warrant called   1,000,000        
Warrant exercise price   $ 2.05        
Warrant term   5 years        
Net proceeds from offering   $ 1,240        
Common Stock [Member] | Registered Direct Offering [Member]            
Net proceeds from offering   $ 800        
Preferred Stock [Member]            
Preferred shares, par value     $ 0.01      
Series P Preferred Stock [Member]            
Preferred shares authorized     50,000      
Series A Convertible Preferred Stock [Member]            
Preferred shares authorized     50,000     50,000
Maximum [Member] | Preferred Stock [Member]            
Preferred shares authorized     100,000      
Reduced Original Warrant Agreement [Member]            
Warrant exercise price     $ 1.13