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SHARE CAPITAL AND SHARE BASED COMPENSATION - Performance based RSU's (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Weighted average assumptions used:        
Expected dividend yield (in percent)   0.00%    
Implied volatility term (in years)   10 months 24 days    
Weighted average grant date fair value per share        
Compensation cost recognized in the consolidated statement of income   $ 1,434 $ 2,274 $ 7,148
RSU cost capitalized   16 $ 110 608
Restricted Stock Units, Time And Performance Based        
Weighted average grant date fair value per share        
Unrecognized compensation cost   $ 1,700    
Weighted average period of recognition for unrecognized compensation cost (in years)   1 year    
Performance based restricted stock units        
Share options:        
Award vesting period (in years)   3 years    
Number of shares authorized for grant (in shares)   159,430    
Weighted average assumptions used:        
Remaining performance period (in years) 2 years 9 months 18 days 1 year 2 months 15 days 2 years 2 months 15 days  
Expected term of options (in years) 3 years      
Expected dividend yield (in percent) 0.00%      
Risk free interest rate (in percent) 0.42%      
Expected volatility of common stock (in percent) 84.00%      
Share price (in dollars per share) $ 7.49      
Nonvested, Number of Shares        
Nonvested RSUs (in shares)   28,000 159,000  
Forfeited during the year (in dollars per share)   $ 6.25    
Forfeited in period (in shares)   (131,000)    
Weighted average grant date fair value per share        
Nonvested RSUs (in dollars per share)   $ 6.25 $ 6.25  
Compensation cost recognized in the consolidated statement of income   $ 1,774 $ 2,739 1,124
RSU cost capitalized   $ 322 $ 295 $ 0
Performance based restricted stock units | Minimum        
Share options:        
Award vesting right (in percent)   0.00%    
Performance based restricted stock units | Maximum        
Share options:        
Award vesting right (in percent)   100.00%