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Related Party Transactions - Additional Information (Detail)	0 Months Ended
	Dec. 09, 2002 Directors	May 26, 1998
Related Party Transactions [Abstract]
Post Finance cost proceeds	5.00%	5.00%
Directors interest in ownership of Company	58.00%
Officers and Directors owning in limited liability	2

X

- Definition

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

+ References

No definition available.

+ 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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Namespace Prefix:	omex_
Data Type:	num:percentItemType
Balance Type:	na
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X

- Definition

Percentage of proceeds from shipwrecks receivable under agreement.

+ References

No definition available.

+ Details

Name:	omex_PercentageOfProceedsFromShipwrecksReceivableUnderAgreement
Namespace Prefix:	omex_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

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