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Consolidated Statements of Cash Flows (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net loss before non-controlling interest | $ (28,662,488)us-gaap_ProfitLoss | $ (14,861,309)us-gaap_ProfitLoss | $ (18,184,113)us-gaap_ProfitLoss
Adjustments to reconcile net loss to net cash (used) in operating activities: |  |  |
Loan fee amortization | 15,046 us-gaap_AmortizationOfFinancingCosts | 185,113 us-gaap_AmortizationOfFinancingCosts | 425,561 us-gaap_AmortizationOfFinancingCosts
Note payable interest accretion | 587,948 us-gaap_IncreaseDecreaseInInterestPayableNet | 1,961,069 us-gaap_IncreaseDecreaseInInterestPayableNet | 4,120,221 us-gaap_IncreaseDecreaseInInterestPayableNet
Senior convertible debt interest settled with common stock issuance | 73,037 omex_SeniorConvertibleDebitInterestSettledWithCommonStockIssuance | 671,548 omex_SeniorConvertibleDebitInterestSettledWithCommonStockIssuance | 349,483 omex_SeniorConvertibleDebitInterestSettledWithCommonStockIssuance
Share-based compensation | 2,227,235 us-gaap_ShareBasedCompensation | 2,451,565 us-gaap_ShareBasedCompensation | 1,489,807 us-gaap_ShareBasedCompensation
Depreciation and amortization | 5,510,909 us-gaap_Depreciation | 1,937,641 us-gaap_Depreciation | 1,589,133 us-gaap_Depreciation
Reversal of bad debt provision | (522,500)omex_ReversalOfBadDebtProvision |  |
Investment in consolidated entity |  | (301,093)omex_InvestmentInConsolidatedEntity |
Deferred revenue settled with zero basis stock of unconsolidated entity |  | (440,054)omex_DeferredRevenueSettledWithZeroBasisStockOfUnconsolidatedEntity |
Change in derivatives liabilities fair value | (1,001,679)us-gaap_GainOnDerivativeInstrumentsPretax | (4,385,380)us-gaap_GainOnDerivativeInstrumentsPretax | (3,631,930)us-gaap_GainOnDerivativeInstrumentsPretax
Loss in unconsolidated entity | 522,500 us-gaap_IncomeLossFromEquityMethodInvestments |  |
Settlement of vendor payable with subsidiary stock |  | 625,000 omex_SettlementOfVendorPayableWithSubsidiaryStock |
(Increase) decrease in: |  |  |
Accounts receivable | (6,269,044)us-gaap_IncreaseDecreaseInAccountsReceivable | 1,792,266 us-gaap_IncreaseDecreaseInAccountsReceivable | (1,601,315)us-gaap_IncreaseDecreaseInAccountsReceivable
Inventory | (264,904)us-gaap_IncreaseDecreaseInInventories | 472,715 us-gaap_IncreaseDecreaseInInventories | 65,192 us-gaap_IncreaseDecreaseInInventories
Other assets | 2,003,546 us-gaap_IncreaseDecreaseInOtherOperatingAssets | (2,042,713)us-gaap_IncreaseDecreaseInOtherOperatingAssets | (119,358)us-gaap_IncreaseDecreaseInOtherOperatingAssets
Increase (decrease) in: |  |  |
Accounts payable | (242,041)us-gaap_IncreaseDecreaseInAccountsPayable | 1,515,694 us-gaap_IncreaseDecreaseInAccountsPayable | 832,653 us-gaap_IncreaseDecreaseInAccountsPayable
Accrued expenses and other | (2,532,143)us-gaap_IncreaseDecreaseInAccruedLiabilities | (8,684,797)us-gaap_IncreaseDecreaseInAccruedLiabilities | 12,254,102 us-gaap_IncreaseDecreaseInAccruedLiabilities
Deferred income and revenue participation rights |  | (555,064)omex_DeferredIncomeFromRevenueParticipationRights | (4,465,868)omex_DeferredIncomeFromRevenueParticipationRights
NET CASH (USED) IN OPERATING ACTIVITIES | (28,554,578)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (19,657,799)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (6,876,432)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |
Purchase of property and equipment | (2,968,197)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (4,504,779)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (946,190)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
NET CASH (USED) IN INVESTING ACTIVITIES | (2,968,197)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (4,504,779)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (946,190)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |
Proceeds from issuance of common stock |  | 10,361,336 us-gaap_ProceedsFromIssuanceOfCommonStock | 860,482 us-gaap_ProceedsFromIssuanceOfCommonStock
Proceeds from issuance of loan payable | 17,684,514 us-gaap_ProceedsFromIssuanceOfLongTermDebt | 10,000,000 us-gaap_ProceedsFromIssuanceOfLongTermDebt | 19,994,483 us-gaap_ProceedsFromIssuanceOfLongTermDebt
Restricted cash held as collateral on loans payable | 10,165,004 omex_PaymentRestrictedCashHeldAsCollateralOnLoanPayable | (10,408,826)omex_PaymentRestrictedCashHeldAsCollateralOnLoanPayable | 187,673 omex_PaymentRestrictedCashHeldAsCollateralOnLoanPayable
Purchase of subsidiary stock |  | (1,250,000)omex_PurchaseOfSubsidiaryStock |
Proceeds from sale of subsidiary stock |  | 27,500,000 omex_ProceedsFromSaleOfSubsidiaryStock |
Broker commissions and fees on capital raises |  |  | (400,000)us-gaap_PaymentsOfStockIssuanceCosts
Dividends |  |  | (10,000)us-gaap_PaymentsOfDividends
Repayment of mortgage and loans payable | (14,505,450)omex_RepaymentOfMortgageAndLoansPayable | (814,089)omex_RepaymentOfMortgageAndLoansPayable | (10,685,396)omex_RepaymentOfMortgageAndLoansPayable
NET CASH PROVIDED BY FINANCING ACTIVITIES | 13,344,068 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 35,388,421 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 9,947,242 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | (18,178,707)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 11,225,843 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 2,124,620 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR | 21,322,257 us-gaap_CashAndCashEquivalentsAtCarryingValue | 10,096,414 us-gaap_CashAndCashEquivalentsAtCarryingValue | 7,971,794 us-gaap_CashAndCashEquivalentsAtCarryingValue
CASH AND CASH EQUIVALENTS AT END OF YEAR | 3,143,550 us-gaap_CashAndCashEquivalentsAtCarryingValue | 21,322,257 us-gaap_CashAndCashEquivalentsAtCarryingValue | 10,096,414 us-gaap_CashAndCashEquivalentsAtCarryingValue
SUPPLEMENTARY INFORMATION: |  |  |
Interest paid | 989,601 us-gaap_InterestPaid | 623,160 us-gaap_InterestPaid | 1,368,324 us-gaap_InterestPaid
Income taxes paid | 15,000 us-gaap_IncomeTaxesPaid |  |
NON-CASH TRANSACTIONS: |  |  |
Accrued compensation paid by equity instruments | 113,126 omex_PriorPeriodAccruedCompensationPaidByEquityInstruments | 165,748 omex_PriorPeriodAccruedCompensationPaidByEquityInstruments | 347,528 omex_PriorPeriodAccruedCompensationPaidByEquityInstruments
Equipment purchased with financing |  | 756,795 us-gaap_CapitalExpendituresIncurredButNotYetPaid | 558,499 us-gaap_CapitalExpendituresIncurredButNotYetPaid
Debt and interest payments with common shares | 2,347,826 us-gaap_DebtConversionConvertedInstrumentAmount1 | 8,608,694 us-gaap_DebtConversionConvertedInstrumentAmount1 | 4,262,528 us-gaap_DebtConversionConvertedInstrumentAmount1
Investment in unconsolidated entity per debt conversion into entity shares | 522,500 us-gaap_TransferToInvestments |  |
Series G Preferred Stock conversion |  |  | $ 250,000 omex_SeriesGPreferredStockConversion

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- Definition The amount of cash paid for interest during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3574-108585 + Details
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- Definition Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3574-108585 + Details
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- Definition Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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- Definition Value of investments transferred to the entity's investments in noncash transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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