This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Investments, at Equity, and Advances to 50% or Less Owned Companies - Schedule of Equity Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025
Schedule Of Investments [Line Items]
Investments at equity	$ 3,009	$ 2,938	$ 2,300
Seabulk Angola
Schedule Of Investments [Line Items]
Ownership percentage	49.00%
Investments at equity	$ 909	1,058
SEACOR Marine Arabia
Schedule Of Investments [Line Items]
Ownership percentage	45.00%
Investments at equity	$ 2,032	1,809
Other Offshore Marine Services Joint Ventures
Schedule Of Investments [Line Items]
Investments at equity	$ 68	$ 71
Other Offshore Marine Services Joint Ventures \| Minimum
Schedule Of Investments [Line Items]
Ownership percentage	20.00%
Other Offshore Marine Services Joint Ventures \| Maximum
Schedule Of Investments [Line Items]
Ownership percentage	50.00%