Amount of depreciation and write down for the period.

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The amount of cost associated with drydocking and capitalized as part of property, plant and equipment.

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n/a

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for exchange or sale.

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Amount of accumulated write down for impairments for property, plant and equipment.

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The decrease in property plant and equipment resulting from disposals.

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

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Amount of decrease in accumulated depreciation, depletion and amortization as a result of sale or disposal of property, plant and equipment.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of assets pledged to secure a debt instrument.

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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 of divestiture 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 after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services 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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Vessels and Equipment - Long-term debt (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Vessels and Equipment
Book value of assets pledged as security	$ 1,513,000				$ 1,513,000		$ 1,462,000
Vessels & equipment - Activity
Vessels and equipment, beginning balance		$ 2,421,556		$ 2,398,434	2,421,556	$ 2,398,434	2,398,434
Additions					125,567		126,106
Drydock costs					7,592		553
Disposals					(110,652)		(103,537)
Vessels and equipment, ending balance	2,444,063				2,444,063		2,421,556
Accumulated depreciation - Activity
Accumulated depreciation, beginning balance		(894,210)		(826,366)	(894,210)	(826,366)	(826,366)
Accumulated depreciation, disposals					50,349		43,973
Accumulated depreciation for the year	(29,372)		$ (27,748)		(58,135)	(55,490)	(111,817)
Accumulated depreciation, ending balance	(901,996)				(901,996)		(894,210)
Accumulated impairment - Activity
Accumulated write down, beginning balance		(65,154)		(79,070)	(65,154)	(79,070)	(79,070)
Accumulated impairment, disposals					35,734		30,300
Depreciation and impairment for the period	0	0	$ (16,384)	0		(16,384)	(16,384)
Accumulated write down, ending balance	(29,420)				(29,420)		(65,154)
Net Vessels - Activity
Net Vessels, beginning balance		$ 1,462,192		$ 1,492,998	1,462,192	$ 1,492,998	1,492,998
Additions					125,567		126,106
Drydock costs					7,592		553
Disposals					(24,569)		(29,264)
Depreciation and impairment for the period					(58,135)		(128,201)
Net Vessels, ending balance	$ 1,512,647				$ 1,512,647		$ 1,462,192