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VESSELS AND EQUIPMENT, NET (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($) vessels large_range_2Tanker_vessel_type	Dec. 31, 2020 USD ($)
Movement in Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment [Roll Forward]
Number of newbuild vessels delivered | large_range_2Tanker_vessel_type	2
Number of vessels with EGCs installed during the period | vessels	1
Owned vessels
Movement in Property, Plant and Equipment [Roll Forward]
Vessels and equipment, gross, beginning balance	$ 3,867,871
Additions to vessels and equipment	4,611
Transfers from Newbuildings	96,683
Vessels and equipment, gross, ending balance	3,969,165
Movement in Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment [Roll Forward]
Accumulated depreciation, beginning balance	(560,727)
Depreciation	(67,451)
Accumulated depreciation, ending balance	(628,178)
Vessels and equipment, net	$ 3,340,987	$ 3,307,144

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Number Of Vessels With Exhaust Gas Cleanup Systems Installed During The Period

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Number of Newbuildings Delivered

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount of increase (decrease) of physical assets used in the normal conduct of business and not intended for resale, from reclassification, impairment, donation, or changes classified as other. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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