Total other costs capitalized in vessel cost consisting of predelivery expenses.

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Number of memoranda of agreement entered into with unrelated parties by the Company to acquire vessels.

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Number of subsidiaries that entered into memoranda of agreement to acquire vessels.

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Amount of noncurrent assets classified as other.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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The cash outflow for acquisition of or capital improvements to properties held for investment (operating, managed, leased) or for use.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Section 45
-Paragraph 13
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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 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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-SubTopic 10
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Vessels, net, Vessel Acquisitions and Vessels' Improvements (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Nov. 30, 2022 USD ($) Subsidiary Agreement	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Vessel Acquisitions [Abstract]
Other non-current assets		$ 522	$ 819
Payments for vessels' improvements		2,109	1,777	$ 0
Number of subsidiaries acquiring vessels \| Subsidiary	4
Number of memoranda of agreement to acquire vessels \| Agreement	4
Continuing Operations [Member] \| Briolette and P. Fos [Member]
Vessel Acquisitions [Abstract]
Purchase price of the vessels			2,218
Payments for vessels' improvements			1,758
Continuing Operations [Member] \| Blue Moon [Member]
Vessel Acquisitions [Abstract]
Purchase price of the vessels		1,218
Other non-current assets			558
Vessels' improvements transferred from other non-current assets		558
Payments for vessels' improvements		1,199	$ 19
Continuing Operations [Member] \| P. Kikuma [Member]
Vessel Acquisitions [Abstract]
Payments for vessels' improvements		$ 450
Continuing Operations [Member] \| Aframax Tankers [Member]
Vessel Acquisitions [Abstract]
Pre-delivery costs capitalized	$ 677
Continuing Operations [Member] \| P. Sophia [Member]
Vessel Acquisitions [Abstract]
Purchase price of the vessels	27,577
Continuing Operations [Member] \| P. Aliki [Member]
Vessel Acquisitions [Abstract]
Purchase price of the vessels	36,500
Continuing Operations [Member] \| P. Monterey [Member]
Vessel Acquisitions [Abstract]
Purchase price of the vessels	35,000
Continuing Operations [Member] \| P. Long Beach [Member]
Vessel Acquisitions [Abstract]
Purchase price of the vessels	$ 43,750