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Share Capital and Share Premium (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 2 Months Ended 4 Months Ended 5 Months Ended 6 Months Ended
Jan. 13, 2021
Feb. 12, 2021
Jan. 27, 2021
Mar. 02, 2021
Jun. 25, 2021
Jun. 30, 2021
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Disclosure of classes of share capital [line items]                  
Voting Rights             Holders of the Company’s common shares and Class B shares have equivalent economic rights, but holders of Company’s common shares are entitled to one vote per share and holders of the Company’s Class B shares are entitled to twenty votes per share. Each holder of Class B shares may convert, at its option, any or all of the Class B shares held by such holder into an equal number of common shares.    
Share premium           $ 284,383 $ 284,383   $ 195,102
Proceeds from issuing shares             $ 89,580 $ 24,207  
Pre-funded warrants [member]                  
Disclosure of classes of share capital [line items]                  
Par value per share | $ / shares $ 0.004                
Issuance of common stock due to exercise of warrants 130,000                
Class A Warrants [member]                  
Disclosure of classes of share capital [line items]                  
Issuance of common stock due to exercise of warrants             5,550    
Number of shares called by warrants           388,700 388,700    
Number of outstanding warrants           388,700 388,700    
PP Warrants [member]                  
Disclosure of classes of share capital [line items]                  
Number of shares called by warrants           1,291,833 1,291,833    
Number of outstanding warrants           1,291,833 1,291,833    
Institutional investors [member]                  
Disclosure of classes of share capital [line items]                  
Increase (decrease) in number of shares outstanding   3,850,000 2,155,000   8,900,000        
Par value per share | $ / shares   $ 0.004 $ 0.004   $ 0.004        
Proceeds from issuing shares   $ 27,891 $ 15,108   $ 46,581        
Share issue related cost   $ 152 $ 120   $ 129        
Institutional investors [member] | Pre-funded warrants [member]                  
Disclosure of classes of share capital [line items]                  
Par value per share | $ / shares   $ 0.004 $ 0.004   $ 0.004        
Number of shares called by warrants   950,000 445,000   1,100,000 550,000 550,000    
Proceeds from issuing shares   $ 10 $ 5     $ 5      
Institutional investors [member] | Pre-funded warrants [member] | Subsequent pre-funded warrants [member]                  
Disclosure of classes of share capital [line items]                  
Number of shares called by warrants           550,000 550,000    
Institutional investors [member] | January 2021 Warrants [member]                  
Disclosure of classes of share capital [line items]                  
Par value per share | $ / shares     $ 0.004            
Number of shares called by warrants     1,950,000            
Exercise price of outstanding share options     $ 6.25            
Institutional investors [member] | February 2021 Warrants [member]                  
Disclosure of classes of share capital [line items]                  
Par value per share | $ / shares   $ 0.004              
Number of shares called by warrants   4,800,000              
Exercise price of outstanding share options   $ 6.25              
Institutional investors [member] | June 2021 Warrants [member]                  
Disclosure of classes of share capital [line items]                  
Par value per share | $ / shares         $ 0.004        
Number of shares called by warrants         10,000,000        
Exercise price of outstanding share options         $ 5.00        
Preference shares [member]                  
Disclosure of classes of share capital [line items]                  
Par value per share | $ / shares           $ 0.001 $ 0.001   $ 0.001
Number of shares outstanding           10,300 10,300    
Preference shares [member] | Goldenmare Limited [member]                  
Disclosure of classes of share capital [line items]                  
Voting Rights             As of June 30, 2021, Goldenmare Limited owns 10,300 of the Company’s Series B preferred shares. Each Series B preferred share has 25,000 votes, provided that no holder of Series B preferred shares may exercise voting rights pursuant to Series B preferred shares that would result in the aggregate voting power of the beneficial owner of any such holder of Series B preferred shares, together with its affiliates, exceeding 49.99% of the total number of votes eligible to be cast on any matter submitted to a vote of shareholders.    
Increase (decrease) in number of shares outstanding       10,000          
Par value per share | $ / shares       $ 0.001          
Issuance of preferred shares       $ 130          
Class B Common Shares [member]                  
Disclosure of classes of share capital [line items]                  
Par value per share | $ / shares           $ 0.001 $ 0.001   $ 0.001
Number of shares outstanding           0 0