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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

X
- Details
Name: | omex_DeferredRevenueTextualAbstract
Namespace Prefix: | omex_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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