Derivative Instruments and Hedging Strategies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Derivative [Line Items]
Derivative gains (loss) on cash flow hedges	$ 14	$ 805
Equity Investments in 50% or Less Owned Companies \| Maximum
Derivative [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%
Cash Flow Hedging
Derivative [Line Items]
Derivative gains (loss) on cash flow hedges	$ (200)	$ 1,200
Cash Flow Hedging \| 3.32% Interest Rate Swap Agreement \| Designated as Hedging Instrument \| SEACOR Marine Foreign Holdings
Derivative [Line Items]
Derivative, fixed interest rate	3.32%
Derivative, notional amount	$ 5,600
Cash Flow Hedging \| 3.195% Interest Rate Swap Agreement \| Designated as Hedging Instrument \| SEACOR Marine Foreign Holdings
Derivative [Line Items]
Derivative, fixed interest rate	3.195%
Derivative, notional amount	$ 30,500
Cash Flow Hedging \| Interest Rate Swap \| Designated as Hedging Instrument \| SEACOR 88/888
Derivative [Line Items]
Derivative, fixed interest rate	3.175%
Derivative, notional amount	$ 5,500

Derivatives notional amount.

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

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+ References

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 20
-Section 45
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=121577181&loc=SL110061190-113977

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580

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-Name Accounting Standards Codification
-Topic 220
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-URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580

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