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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified | 1 Months Ended | 6 Months Ended
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May 31, 2012 | Jun. 30, 2012
Commitments and Contingencies (Textual) [Abstract] |  |
Number of securities owned |  | 0
Project financing |  | $ 10
Estimated cost of the project |  | 13
Maximum [Member] |  |
Commitments and Contingencies (Textual) [Abstract] |  |
Renewed term loan payment |  | 5
Amended senior convertible note |  | 15
Property and Equipment , Estimated Useful life |  | 10 years
Minimum [Member] |  |
Commitments and Contingencies (Textual) [Abstract] |  |
Renewed term loan payment |  | $ 3
Amended senior convertible note | 8 |
Property and Equipment , Estimated Useful life |  | 3 years

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- Details
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- Definition Estimated project costs. + References No definition available. + Details
Name: | omex_EstimatedProjectCosts
Namespace Prefix: | omex_
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Balance Type: | debit
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- Definition Number of securities owned. + References No definition available. + Details
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- Definition Payments on term loan. + References No definition available. + Details
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Balance Type: | credit
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- Definition Project financing. + References No definition available. + Details
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Balance Type: | debit
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Definition Information regarding derivative transactions entered into in connection with the issuance of contingently convertible securities that may be useful in explaining the potential impact of the contingently convertible securities. This information may include the terms of the derivative transaction (including settlement terms), how the transactions relate to the contingently convertible securities, and the number of shares underlying the derivatives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS129-1 -Paragraph 3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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