XML 78 R66.htm IDEA: XBRL DOCUMENT v3.21.2

Revenue Participation Rights - Additional Information (Detail)	1 Months Ended	9 Months Ended
	Feb. 28, 2011 USD ($)	Sep. 30, 2021 USD ($) Project Investment $ / Security shares	Sep. 30, 2020 USD ($)
Deferred Revenue Arrangement [Line Items]
Deferred revenue		$ 3,818,750	$ 0
Revenue participation agreement		$ 15,000,000.0
"Seattle" Project [Member]
Deferred Revenue Arrangement [Line Items]
Percentage of revenue owed to certificate holder per each million invested		1.00%
Common shares issued per unit | shares		100,000
Galt Resources, LLC [Member]
Deferred Revenue Arrangement [Line Items]
Percentage of revenue owed to certificate holders		50.00%
Percentage of revenue owed to certificate holder per each million invested		1.00%
Investment multiplier in case of project success | Investment		3
Projects after bifurcation | Project		2
Galt Resources, LLC [Member] | SS Gairsoppa [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue		$ 3,756,250
Galt Resources, LLC [Member] | Maximum [Member]
Deferred Revenue Arrangement [Line Items]
Investment for future revenue rights	$ 7,512,500
HMS Victory Project [Member]
Deferred Revenue Arrangement [Line Items]
Percentage of revenue owed to certificate holders		7.5125%
Revenue Participation Certificates [Member] | "Seattle" Project [Member]
Deferred Revenue Arrangement [Line Items]
Revenue participation certificates per unit value | $ / Security		50,000

X

- Definition

Common shares issued per unit.

+ References

No definition available.

+ Details

Name:	omex_CommonSharesIssuedPerUnit
Namespace Prefix:	omex_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Investment for future revenue rights.

+ References

No definition available.

+ Details

Name:	omex_InvestmentForFutureRevenueRights
Namespace Prefix:	omex_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Investment multiplier in case of project success.

+ References

No definition available.

+ Details

Name:	omex_InvestmentMultiplierInCaseOfProjectSuccess
Namespace Prefix:	omex_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of projects after bifurcation.

+ References

No definition available.

+ Details

Name:	omex_NumberOfProjectsAfterBifurcation
Namespace Prefix:	omex_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of revenue owed to certificate holders.

+ References

No definition available.

+ Details

Name:	omex_PercentageOfRevenueOwedToCertificateHolders
Namespace Prefix:	omex_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Percentage of revenue owed to certificate holders per unit.

+ References

No definition available.

+ Details

Name:	omex_PercentageOfRevenueOwedToCertificateHoldersPerUnit
Namespace Prefix:	omex_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Revenue participation agreement value.

+ References

No definition available.

+ Details

Name:	omex_RevenueParticipationAgreementValue
Namespace Prefix:	omex_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Revenue Participation Certificates Per Unit Value.

+ References

No definition available.

+ Details

Name:	omex_RevenueParticipationCertificatesPerUnitValue
Namespace Prefix:	omex_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045

+ Details

Name:	us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

No definition available.

+ Details

Name:	us-gaap_DeferredRevenueArrangementLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DeferredRevenueArrangementTypeAxis=omex_SeattleProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DeferredRevenueArrangementTypeAxis=omex_GaltResourcesLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=omex_SsGairsoppaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DeferredRevenueArrangementTypeAxis=omex_HmsVictoryProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	omex_InvestmentsAxis=omex_RevenueParticipationCertificatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: