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VESSELS AND EQUIPMENT, NET (Summary of Vessels and Equipment, Net) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Cost	$ 1,916,581	$ 1,955,880
Accumulated depreciation	423,497	396,168
Vessels and equipment, net	1,493,084	1,559,712
Property, Plant and Equipment, Transfers and Changes	27,000
Cost Capitalised from Modifications to Vessels, before Transfer to the Vessel	$ 1,000	$ 500

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- Definition

Cost Capitalised from Modifications to Vessels, before Transfer to the Vessel

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Vessels and equipment, net.

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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The amount of accumulated depreciation, by major property class, recorded on property subject to or available for lease as of the balance sheet date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 45
-Paragraph 3
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Amount before accumulated depreciation of physical assets used in the normal conduct of business to produce goods and services subject to or available for lease.

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-Publisher FASB
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