XML 120 R61.htm IDEA: XBRL DOCUMENT
v3.20.1

Loans Payable - Schedule of Allocation of Cash Proceeds to Derivative Components at their Fair Values - Promissory Note (Detail) - Promissory Note [Member] - Oceanica Resources S. de. R.L [Member] | Dec. 31, 2019 USD ($)
--- | ---
Debt Instrument [Line Items] |
Cash proceeds | $ 14,750,001
Deferred Income Call Option [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 383,148
2014 Convertible Promissory Notes [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 14,366,853
First Tranche [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 2,000,000
First Tranche [Member] | Deferred Income Call Option [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 67,241
First Tranche [Member] | 2014 Convertible Promissory Notes [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 1,932,759
Second Tranche [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 6,000,000
Second Tranche [Member] | Deferred Income Call Option [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 173,659
Second Tranche [Member] | 2014 Convertible Promissory Notes [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 5,826,341
Third Tranche [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 3,000,000
Third Tranche [Member] | Deferred Income Call Option [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 75,828
Third Tranche [Member] | 2014 Convertible Promissory Notes [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 2,924,172
Fourth Tranche [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 2,000,000
Fourth Tranche [Member] | Deferred Income Call Option [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 39,911
Fourth Tranche [Member] | 2014 Convertible Promissory Notes [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 1,960,089
Fifth Tranche [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 17,500,001
Fifth Tranche [Member] | Deferred Income Call Option [Member] |
Debt Instrument [Line Items] |
Cash proceeds | 26,509
Fifth Tranche [Member] | 2014 Convertible Promissory Notes [Member] |
Debt Instrument [Line Items] |
Cash proceeds | $ 1,723,492

X
- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(13)) -URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
Name: | us-gaap_ConvertibleNotesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=omex_PromissoryNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=omex_OceanicaResourcesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=omex_DeferredRevenueCallOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=omex_TwoThousandAndFourteenConvertiblePromissoryNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=omex_TrancheOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=omex_TrancheTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=omex_TrancheThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=omex_TrancheFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=omex_TrancheFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |