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v3.23.2

Loans Payable - Accounting Considerations - Additional Information (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2023 USD ($)
Debt Disclosure [Abstract] |
Repayments of notes payable | $ 1.2
Percentage of face value of note | 120.00%

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- Definition Percentage of face value of note. + References No definition available. + Details
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Namespace Prefix: | omex_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The cash outflow for a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | credit
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