XML 80 R49.htm IDEA: XBRL DOCUMENT v3.3.0.814

Mortgage and Loans Payable - Promissory Note - Additional Information (Detail)		4 Months Ended	9 Months Ended
	Mar. 11, 2015 USD ($)	Jun. 30, 2015 Tranches	Sep. 30, 2015 USD ($)
Debt Instrument [Line Items]
Promissory note face amount			$ 9,955,000
Share repurchase agreement expiration date			Mar. 30, 2016
Promissory note outstanding amount			$ 14,750,000
Option agreement extension period			2 years
Estimated market rate loan percentage			15.00%
Debt discount amount			$ 383,148
Debt discount amortization amount			383,148
Oceanica Call Option [Member]
Debt Instrument [Line Items]
Stock granted during period, value	$ 40,000,000		$ 40,000,000
Stock granted during period, percentage	54.00%		54.00%
Reduction in option consideration			$ 20,000,000
Promissory Note [Member]
Debt Instrument [Line Items]
Promissory note face amount	$ 14,750,000
Interest rate, stated percentage			8.00%
Accrued interest			$ 508,055
Promissory Note [Member] | Minosa [Member] | Stock Purchase Agreement [Member]
Debt Instrument [Line Items]
Number of advances | Tranches		5
Promissory Note [Member] | Minosa [Member] | Stock Purchase Agreement [Member] | Maximum [Member]
Debt Instrument [Line Items]
Promissory note face amount	$ 14,750,000

X

- Definition

Convertible notes payable outstanding.

+ References

No definition available.

+ Details

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

X

- Definition

Debt instrument number of tranches.

+ References

No definition available.

+ Details

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

X

- Definition

Estimated market rate loan percentage.

+ References

No definition available.

+ Details

Name:	omex_EstimatedMarketRateLoanPercentage
Namespace Prefix:	omex_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Increase Decrease in Stock Option Expense

+ References

No definition available.

+ Details

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

X

- Definition

Option Agreement Period Of Extension

+ References

No definition available.

+ Details

Name:	omex_OptionAgreementPeriodOfExtension
Namespace Prefix:	omex_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Share Repurchase Agreement Expiration Date

+ References

No definition available.

+ Details

Name:	omex_ShareRepurchaseAgreementExpirationDate
Namespace Prefix:	omex_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Stock granted percentage upon conversion of convertible securities.

+ References

No definition available.

+ Details

Name:	omex_StockGrantedPercentageUponConversionOfConvertibleSecurities
Namespace Prefix:	omex_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Stock granted value upon conversion of convertible securities.

+ References

No definition available.

+ Details

Name:	omex_StockGrantedValueUponConversionOfConvertibleSecurities
Namespace Prefix:	omex_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 230



-SubTopic 10



-Section 45



-Paragraph 28



-Subparagraph (b)



-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 835



-SubTopic 30



-Section 45



-Paragraph 1A



-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399



Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 225



-SubTopic 10



-Section S99



-Paragraph 2



-Subparagraph (SX 210.5-03.8)



-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_AmortizationOfDebtDiscountPremium
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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://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 2: 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(a))



-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910



Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Section 02



-Paragraph 20, 22



-Article 5

+ Details

Name:	us-gaap_ConvertibleNotesPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Increase for accrued, but unpaid interest on the debt instrument for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 235



-SubTopic 10



-Section S99



-Paragraph 1



-Subparagraph (SX 210.4-08.(f))



-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_DebtInstrumentIncreaseAccruedInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: 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(a)(1))



-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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

- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 835



-SubTopic 30



-Section 45



-Paragraph 1A



-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 835



-SubTopic 30



-Section 55



-Paragraph 8



-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_OptionIndexedToIssuersEquityTypeAxis=us-gaap_CallOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=omex_MinosaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=omex_SharePurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: