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Deferred Revenue (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Deferred Revenue (Textual) [Abstract]
Marine services obligations	$ 2,835,522	$ 2,835,522

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- Details

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Namespace Prefix:	omex_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Marine services obligations deferred revenue.

+ References

No definition available.

+ Details

Name:	omex_MarineServicesObligationsDeferredRevenue
Namespace Prefix:	omex_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration