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Additional Paid-In Capital (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
May 08, 2018
Mar. 27, 2019
Jan. 16, 2018
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Stock Issued During Period, Value, Stock Options Exercised       $ 21    
Stock Issued During Period, Shares, Issued for Services 243,275          
Common Stock, Shares Authorized       200,000,000   200,000,000
Stock based compensation       $ 86 $ 50  
Stock options [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period       50,000    
Stock Issued During Period, Value, Stock Options Exercised       $ 21    
Stock Issued During Period, Shares, Issued for Services       50,000    
Stock Issued During Period, Value, Issued for Services       $ 0    
Employees and Directors [Member]            
Stock based compensation       74 48  
Additional Paid-In Capital [Member]            
Stock Issued During Period, Value, Stock Options Exercised       21    
Increase in additional paid-in capital       33    
Stock based compensation       $ 86 50  
Class of Warrant or Right, Exercises in Period       700,000    
Number of common shares exercised       700,000    
Class of Warrant or Right, Exercises in Period, Intrinsic Value          
Proceeds from Warrant Exercises       395    
Warrants exercised       395    
2016 Stock Option Plan [Member] | Employee [Member] | Stock options [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   100,000 100,000      
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price   $ 0.69 $ 0.79      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term   2 years 2 years      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage   25.00% 25.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period   10 years 10 years      
Stock Granted, Value, Share-based Compensation, Gross   $ 40 $ 44      
Stock options granted to a consultant [Member]            
Stock based compensation       12 2  
Unrecognized stock-based compensation [Member]            
Stock based compensation       416 181  
Deferred Share Units [Member]            
Deferred Share Units Grants in Period   271,740        
Salaries, Wages and Officers' Compensation   $ 179   $ 210