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Related Party Transactions - Additional Information (Detail)	0 Months Ended
	Dec. 09, 2002 Directors	May 26, 1998
Related Party Transaction [Line Items]
Post finance cost proceeds	5.00%omex_PercentageOfProceedsFromShipwrecksReceivableUnderAgreement	5.00%omex_PercentageOfProceedsFromShipwrecksReceivableUnderAgreement
Georgia LLC [Member]
Related Party Transaction [Line Items]
Post finance cost proceeds	5.00%omex_PercentageOfProceedsFromShipwrecksReceivableUnderAgreement / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = omex_GeorgiaLimitedLiabilityCompanyMember
Directors' interest in ownership of Company	58.00%omex_OwnershipPercentageOfDirectorAndOfficersInRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = omex_GeorgiaLimitedLiabilityCompanyMember
Officers and directors owning an interest in the limited liability	2omex_NumberOfOfficersAndDirectorsOwningInterestInLimitedLiabilityCompany / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = omex_GeorgiaLimitedLiabilityCompanyMember

X

- Definition

Number of officers and directors owning interest in limited liability company.

+ References

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+ Details

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X

- Definition

Ownership percentage of director and officers in related party.

+ References

No definition available.

+ Details

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X

- Definition

Percentage of proceeds from shipwrecks receivable under agreement.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: