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SHARE CAPITAL, ADDITIONAL PAID-IN CAPITAL AND CONTRIBUTED SURPLUS (Summary of Share Capital) (Details) - USD ($)
$ / shares in Units, $ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Stockholders' Equity Note [Abstract]    
Share capital, shares authorized (in shares) 200,000,000 200,000,000
Share capital, par value (in dollars per share) $ 0.01 $ 0.01
Value of authorized share capital $ 2,000 $ 2,000
Share capital, shares issued (in shares) 120,629,455 119,391,310
Value of issued and fully paid share capital $ 1,206 $ 1,194