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Mortgage and Loans Payable - Long -Term Obligation Maturities (Detail) (USD $) | Dec. 31, 2014
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Contractual Obligation, Fiscal Year Maturity [Abstract] |
Long term obligations, Total | $ 15,660,299 us-gaap_LongTermDebt
Long term obligations, 2015 | 1,670,049 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
Long term obligations, 2016 | 13,990,250 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
Long term obligations, 2017 | 0 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
Long term obligations, 2018 | 0 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
Long term obligations, 2019 | 0 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
Long term obligations, More than 5 Years | 0 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
Interest on obligations, Total | 1,965,332 omex_RepaymentsOfInterest
Interest on obligations, 2015 | 1,140,354 omex_LongTermDebtMaturitiesRepaymentsOfInterestInNextTwelveMonths
Interest on obligations, 2016 | 824,978 omex_LongTermDebtMaturitiesRepaymentsOfInterestInYearTwo
Interest on obligations, 2017 | 0 omex_LongTermDebtMaturitiesRepaymentsOfInterestInYearThree
Interest on obligations, 2018 | 0 omex_LongTermDebtMaturitiesRepaymentsOfInterestInYearFour
Interest on obligations, 2019 | 0 omex_LongTermDebtMaturitiesRepaymentsOfInterestInYearFive
Interest on obligations, More than 5 Years | 0 omex_LongTermDebtMaturitiesRepaymentsOfInterestAfterYearFive
Total obligations | 17,625,631 us-gaap_ContractualObligation
Total obligations, 2015 | 2,810,403 us-gaap_ContractualObligationDueInNextTwelveMonths
Total obligations, 2016 | 14,815,228 us-gaap_ContractualObligationDueInSecondYear
Total obligations, 2017 | 0 us-gaap_ContractualObligationDueInThirdYear
Total obligations, 2018 | 0 us-gaap_ContractualObligationDueInFourthYear
Total obligations, 2019 | 0 us-gaap_ContractualObligationDueInFifthYear
Total obligations, More than 5 Years | $ 0 us-gaap_ContractualObligationDueAfterFifthYear

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- Definition Amount of contractual obligation maturing after the fifth fiscal year following the latest fiscal year. + References No definition available. + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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