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Finance Liabilities (Narrative) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 06, 2022 USD ($)	Aug. 17, 2022 USD ($) Vessels	Mar. 29, 2022 USD ($)
Property, Plant and Equipment [Line Items]
Finance lease liability	$ 127,591	$ 132,129
Weighted average remaining lease term	7 years 2 months 12 days
Average interest rate	4.83%
Sublease Income	$ 14,678
Florida 2022 Vessel [Member]
Property, Plant and Equipment [Line Items]
Finance lease liability					$ 50,000
Term for bareboat charter party					10 years
Lease obligation to repurchase vessel					$ 16,350
New Orleans And Santa Barbara Vessels [Member]
Property, Plant and Equipment [Line Items]
Finance lease liability				$ 66,400
Term for bareboat charter party				8 years
Number of sale and leaseback agreements | Vessels				2
New Orleans Vessel [Member]
Property, Plant and Equipment [Line Items]
Lease obligation to repurchase vessel				$ 13,000
Santa Barbara Vessel [Member]
Property, Plant and Equipment [Line Items]
Lease obligation to repurchase vessel				$ 13,000
DSI Andromeda [Member]
Property, Plant and Equipment [Line Items]
Finance lease liability			$ 29,850
Term for bareboat charter party			10 years
Lease obligation to repurchase vessel			$ 8,050

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