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COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2019 USD ($) vessel | Dec. 31, 2015 lease | Dec. 31, 2019 suezmax_tanker | Dec. 31, 2019 very_large_crude_carrier | Dec. 31, 2019 USD ($) | Dec. 31, 2019 large_range_2_tanker | Aug. 31, 2019 vessel suezmax_tanker | Dec. 31, 2018 USD ($) very_large_crude_carrier | Dec. 31, 2017 very_large_crude_carrier | Dec. 31, 2017 large_range_2_tanker | Dec. 31, 2016 MR_product_tanker | Feb. 01, 2013 MR_product_tanker
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of newbuild vessels |  |  | 1 | 1 |  | 4 |  | 2 | 4 | 1 | 6 | 12
Installments and newbuilding supervision fees paid | $ 45,000 |  |  |  |  |  |  |  |  |  |  |
Newbuilding installment Commitments | $ 302,000 |  |  |  |  |  |  |  |  |  |  |
Newbuilding installment commitments due in 2020 |  |  |  |  | $ 159,600 |  |  |  |  |  |  |
Newbuilding installment commitments due in 2021 |  |  |  |  | 109,100 |  |  |  |  |  |  |
Newbuilding installment commitments due in 2022 |  |  |  |  | 33,300 |  |  |  |  |  |  |
Number of leases assigned to third parties and related parties | lease |  | 2 |  |  |  |  |  |  |  |  |  |
Outstanding lease payments, guaranteed by the Company |  |  |  |  | 5,400 |  |  | $ 6,300 |  |  |  |
Number of vessels owned | vessel | 11 |  |  |  |  |  |  |  |  |  |  |
EGCS commitments |  |  |  |  | 8,300 |  |  |  |  |  |  |
Number of vessels with BWTS commitments | vessel | 8 |  |  |  |  |  |  |  |  |  |  |
BWTS commitments |  |  |  |  | 2,900 |  |  |  |  |  |  |
Number of assets acquired | suezmax_tanker |  |  | 10 |  |  |  |  |  |  |  |  |
Cash consideration due upon closing of SPA | $ 538,200 |  |  |  |  |  |  |  |  |  |  |
Finance lease liability |  |  |  |  | 359,910 |  |  |  |  |  |  |
Number of leased assets | vessel |  |  |  |  |  |  | 5 |  |  |  |  |
Finance Lease Liability |  |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cash consideration due upon closing of SPA | $ 269,200 |  |  |  |  |  |  |  |  |  |  |
Assets Under Sale and Purchase Agreement | Trafigura | Trafigura Vessels Not Chartered Out |  |  |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Finance lease liability |  |  |  |  | $ 272,000 |  |  |  |  |  |  |
Number of leased assets | suezmax_tanker |  |  | 5 |  |  |  | 5 |  |  |  |  |

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