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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 23, 2019 | Aug. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Property, Plant and Equipment [Line Items] |  |  |  |  |
Shares issued for purchase of vessels (in shares) |  | 16,035,856 | 16,035,856 | 0 | 0
Dilutive shares included in calculation (in shares) |  |  | 141,000 |  |
Antidilutive shares excluded from calculation (in shares) |  |  |  | 1,317,000 | 1,170,000
Net income attributable to the Company |  |  | $ 139,972 | $ (8,880) | $ (264,861)
Weighted average number of shares (in shares) |  |  | 173,576,000 | 169,810,000 | 169,809,000
Dilutive effect of contingently returnable shares (in shares) |  |  | 5,598,000 | 0 | 0
Dilutive effect of share options (in shares) |  |  | 141,000 | 0 | 0
Denominator for diluted earnings per share (in shares) |  |  | 179,315,000 | 169,810,000 | 169,809,000
Cash dividends per share declared (in dollars per share) |  |  | $ 0.1 | $ 0 | $ 0.3
Trafigura | Assets Under Sale and Purchase Agreement |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Shares issued for purchase of vessels (in shares) | 16,035,856 |  |  |  |
Shares issued for asset purchase, disposed from escrow account (in shares) |  |  | 4,198,447 |  |
Shares issued for asset purchase, contingently returnable (in shares) |  |  | 11,837,409 |  |

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