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SHARE CAPITAL AND SHARE BASED COMPENSATION - Share Capital (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
SHARE CAPITAL AND SHARE OPTIONS [Abstract]      
Common stock, shares authorized (in shares) 150,000,000 150,000,000  
Common shares, par value (in dollars per share) $ 1.00 $ 1.00  
Common stock, value, authorized $ 150,000 $ 150,000  
Common shares, shares outstanding (in shares) 107,225,832 108,222,604 109,943,594
Common stock, value, issued $ 107,226 $ 108,223  
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Common shares, shares outstanding beginning (in shares) 108,222,604 109,943,594  
Common shares, shares issued beginning (in shares) 108,222,604 109,943,594  
Repurchase and cancellation of treasury shares (in shares) (1,189,653) (1,984,647)  
Vesting of share options (in shares) 186,881 263,657  
Exercise of share options (in shares) 6,000 0  
Common shares, shares outstanding end (in shares) 107,225,832 108,222,604 109,943,594
Common shares, shares issued ending (in shares) 107,225,832 108,222,604 109,943,594
Treasury shares repurchased (in shares) 1,200,000 2,000,000  
Repurchase and cancellation of treasury shares $ 25,477 $ 24,484 $ 16,650
Payments for commissions 20 40  
Contributed surplus $ 200,000 $ 200,000