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Additional Paid-In Capital (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Jan. 01, 2022
Jan. 11, 2021
Jan. 20, 2022
Mar. 31, 2022
Mar. 31, 2021
Schedule of Additional Paid In Capital [Line Items]          
Stock based compensation       $ 32 $ 31
Employee [Member]          
Schedule of Additional Paid In Capital [Line Items]          
Stock based compensation       29  
2016 Stock Option Plan [Member] | Stock options [Member]          
Schedule of Additional Paid In Capital [Line Items]          
Number of shares granted   150,000 25,000    
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price   $ 0.27 $ 0.34    
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   $ 25 $ 6    
Stock options granted to consultant [Member]          
Schedule of Additional Paid In Capital [Line Items]          
Stock based compensation       3 31
Unrecognized stock-based compensation [Member]          
Schedule of Additional Paid In Capital [Line Items]          
Stock based compensation       $ 120 $ 146
Deferred Share Units [Member]          
Schedule of Additional Paid In Capital [Line Items]          
Deferred share units grants in period 543,480        
General and administrative expenses $ 197