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FINANCIAL INSTRUMENTS (Details 2) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Statement [Line Items]      
Cash $ 168 $ 24,765 $ 11,713
Amounts Receivable 2,602 1,208  
Long-term Investments 3,332 3,939  
Warrant Liability 1,123 $ 680  
Level 1 of fair value hierarchy [member]      
Statement [Line Items]      
Cash 11,686    
Amounts Receivable 0    
Long-term Investments 3,332    
Total Financial Assets 15,018    
Warrant Liability 0    
Total Financial Liabilities 0    
Level 2 of fair value hierarchy [member]      
Statement [Line Items]      
Cash 0    
Amounts Receivable 2,602    
Long-term Investments 0    
Total Financial Assets 2,602    
Warrant Liability 0    
Total Financial Liabilities 0    
Level 3 of fair value hierarchy [member]      
Statement [Line Items]      
Cash 0    
Amounts Receivable 0    
Long-term Investments 0    
Total Financial Assets 0    
Warrant Liability (2,773)    
Total Financial Liabilities $ (2,773)