XML 73 R60.htm IDEA: XBRL DOCUMENT
v3.25.2

Fair Value Measurements - Schedule of Changes in Level 3 Fair Value Measurements (Detail) - Level 3 [Member] - USD ($) | 3 Months Ended
--- | ---
Jun. 30, 2025 | Mar. 31, 2025 | Jun. 30, 2024 | Mar. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | $ 61,578,198 | $ 64,801,136 | $ 74,147,022 | $ 74,247,485
Debt conversion - 55,000 common shares |  |  | (96,582) |
Warrants Exercised | (615,685) |  |  |
Change in fair value | $ 10,684,824 | $ (3,222,938) | $ 8,925,463 | $ (7,854,901)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Gain (Loss) on Derivative Instruments, Net, Pretax | Gain (Loss) on Derivative Instruments, Net, Pretax | Gain (Loss) on Derivative Instruments, Net, Pretax | Gain (Loss) on Derivative Instruments, Net, Pretax
Classification of warrant as liability |  |  |  | $ 7,754,438
Ending Balance | $ 71,647,337 | $ 61,578,198 | $ 82,975,903 | 74,147,022
37N Note Embedded Derivative [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 0 | 0 | 336,857 | 702,291
Debt conversion - 55,000 common shares |  |  | (96,582) |
Warrants Exercised | 0 |  |  |
Change in fair value | 0 | 0 | 11,023 | (365,434)
Classification of warrant as liability |  |  |  | 0
Ending Balance | 0 | 0 | 251,298 | 336,857
March 2023 Warrants [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 943,242 | 1,910,950 | 5,263,018 | 0
Debt conversion - 55,000 common shares |  |  | 0 |
Warrants Exercised | (615,685) |  |  |
Change in fair value | 2,249,835 | (967,708) | 2,161,967 | (2,491,420)
Classification of warrant as liability |  |  |  | 7,754,438
Ending Balance | 2,577,392 | 943,242 | 7,424,985 | 5,263,018
December 2023 Warrants [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 406,430 | 827,036 | 2,268,472 | 2,392,563
Debt conversion - 55,000 common shares |  |  | 0 |
Warrants Exercised | 0 |  |  |
Change in fair value | 1,205,399 | (420,606) | 1,128,816 | (124,091)
Classification of warrant as liability |  |  |  | 0
Ending Balance | 1,611,829 | 406,430 | 3,397,288 | 2,268,472
Put Option Liability [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 0 | 0 | 4,384,777 | 5,637,162
Debt conversion - 55,000 common shares |  |  | 0 |
Warrants Exercised | 0 |  |  |
Change in fair value | 0 | 0 | 1,009,132 | (1,252,385)
Classification of warrant as liability |  |  |  | 0
Ending Balance | 0 | 0 | 5,393,909 | 4,384,777
March 2023 Conversion Option [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 428,000 | 2,745,000 | 0 | 0
Debt conversion - 55,000 common shares |  |  | 0 |
Warrants Exercised | 0 |  |  |
Change in fair value | 2,667,000 | (2,317,000) | 0 | 0
Classification of warrant as liability |  |  |  | 0
Ending Balance | 3,095,000 | 428,000 | 0 | 0
December 2023 Conversion Option [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 166,000 | 307,000 | 0 | 0
Debt conversion - 55,000 common shares |  |  | 0 |
Warrants Exercised | 0 |  |  |
Change in fair value | 343,000 | (141,000) | 0 | 0
Classification of warrant as liability |  |  |  | 0
Ending Balance | 509,000 | 166,000 | 0 | 0
Litigation Financing [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 58,663,816 | 56,950,377 | 52,691,820 | 52,115,647
Debt conversion - 55,000 common shares |  |  | 0 |
Warrants Exercised | 0 |  |  |
Change in fair value | 806,206 | 1,713,439 | 769,995 | 576,173
Classification of warrant as liability |  |  |  | 0
Ending Balance | 59,470,022 | 58,663,816 | 53,461,815 | 52,691,820
2022 Warrants [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Beginning Balance | 970,710 | 2,060,773 | 9,202,078 | 13,399,822
Debt conversion - 55,000 common shares |  |  | 0 |
Warrants Exercised | 0 |  |  |
Change in fair value | 3,413,384 | (1,090,063) | 3,844,530 | (4,197,744)
Classification of warrant as liability |  |  |  | 0
Ending Balance | $ 4,384,094 | $ 970,710 | $ 13,046,608 | $ 9,202,078

X
- Definition Fair value measurement with unobservable inputs reconciliation recurring basis liability of debt conversion to equity. + References No definition available. + Details
Name: | omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOfDebtConversionToEquity
Namespace Prefix: | omex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value measurement with unobservable inputs reconciliation recurring basis liability of warrants exercised. + References No definition available. + Details
Name: | omex_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityOfWarrantsExercised
Namespace Prefix: | omex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Indicates line item in statement of income or comprehensive income that includes gain (loss) from liability measured at fair value using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=omex_ThirtySevenNoteEmbeddedDerivativeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=omex_MarchTwoThousandAndTwentyThreeNoteWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=omex_DecemberTwoThousandAndTwentyThreeWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=us-gaap_PutOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=omex_MarchTwoThousandAndTwentyThreeConversionOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=omex_DecemberTwoThousandAndTwentyThreeConversionOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=omex_LitigationFinancingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=omex_TwoThousandAndTwentyTwoWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |