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Discussion of whether the debt instrument is secured or unsecured, and, if secured, a description of the collateral and guarantees required or provided.

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The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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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)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Line-of-Credit Arrangement
-URI http://asc.fasb.org/extlink&oid=6517033

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- Definition

Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ References

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Cash inflow associated with loan origination (the process when securing a mortgage for a piece of real property) or lease origination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
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Amount of consideration received by subsidiary or equity investee in exchange for shares of stock issued or sold. Includes amount of cash received, fair value of noncash assets received, and fair value of liabilities assumed by the investor.

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No definition available.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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This element represents money paid in advance to protect the provider of a product or service, such as a lessor, against damage or nonpayment by the buyer or tenant (lessee) during the term of the agreement. Such damages may include physical damage to the property, theft of property, and other contractual breaches. Security deposits held may be interest or noninterest bearing.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.15(a))
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Loans Payable - Project Term Loan - Additional Information (Detail)					1 Months Ended	3 Months Ended		4 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($) $ / shares shares	Mar. 18, 2016 USD ($) $ / shares shares	Dec. 10, 2015 USD ($)	May. 11, 2015 USD ($)	Mar. 31, 2016 USD ($) $ / shares shares	Mar. 31, 2016 USD ($) Subsidiaries $ / shares shares	Mar. 31, 2015 USD ($)	Jun. 30, 2015 Tranches	Dec. 31, 2015 USD ($)	Oct. 01, 2015	Mar. 11, 2015 USD ($)	Oct. 01, 2014 USD ($)	Aug. 14, 2014 USD ($)	Dec. 31, 2013 $ / shares	May. 10, 2012 USD ($)
Debt Instrument [Line Items]
Aggregate amount issuable															$ 8,000,000
Expected interest expenses						$ 334,060	$ 662,282
Loans payable	$ 20,386,332				$ 20,386,332	$ 20,386,332			$ 18,199,632
Share repurchase agreement expiration date						Mar. 30, 2016
Promissory note outstanding amount	14,750,000				14,750,000	$ 14,750,000
Call option expiration date						Mar. 11, 2016
Derivative, fixed value	40,000,000				40,000,000	$ 40,000,000
Estimated market rate loan percentage						15.00%
Debt discount amount	383,148				383,148	$ 383,148
Debt discount amortization amount						0
Oceanica Call Option (MINOSA) [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%
Monaco Notes [Member]
Debt Instrument [Line Items]
Aggregate amount issuable	2,800,000				2,800,000	$ 2,800,000
Expected interest expenses						0
Notes payable, carrying value	$ 3,449,632				$ 3,449,632	$ 3,449,632
Oceanica Resources S. de. R.L [Member]
Debt Instrument [Line Items]
Per share value of shares purchased by private investor \| $ / shares														$ 2.50
Promissory Note [Member]
Debt Instrument [Line Items]
Debt instrument maturity date						Mar. 18, 2017
Interest rate, stated percentage	8.00%				8.00%	8.00%
Call option				$ 14,750,000
Accrued interest						$ 312,794
Promissory Note [Member] \| Stock Purchase Agreement [Member] \| MINOSA [Member]
Debt Instrument [Line Items]
Number of advances \| Tranches								5
Promissory Note [Member] \| Stock Purchase Agreement [Member] \| Maximum [Member] \| MINOSA [Member]
Debt Instrument [Line Items]
Call option											$ 14,750,000
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member]
Debt Instrument [Line Items]
Call option	$ 14,750,000				$ 14,750,000	14,750,000
First Tranche [Member] \| Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member]
Debt Instrument [Line Items]
Call option	2,000,000				2,000,000	2,000,000
Second Tranche [Member] \| Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member]
Debt Instrument [Line Items]
Call option	6,000,000				6,000,000	6,000,000
Third Tranche [Member] \| Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member]
Debt Instrument [Line Items]
Call option	3,000,000				3,000,000	$ 3,000,000
Note 1 [Member]
Debt Instrument [Line Items]
Aggregate amount issuable													$ 10,000,000
Number of wholly owned subsidiaries \| Subsidiaries						2
Debt instrument, number of shares \| shares						100,000
Debt instrument, Value of shares						$ 250,000
Amortization of components included in interest expense									1,895,263
Marketing program compensation expenses, percentage yet to be recognized						5.00%
Loans payable	$ 2,800,000				$ 2,800,000	$ 2,800,000			3,449,631
Note 1 [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Initial principal amount of note, percent						50.00%
Note 1 [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Initial principal amount of note, percent						100.00%
Note 1 [Member] \| Oceanica Resources S. de. R.L [Member]
Debt Instrument [Line Items]
Shares issued to lender \| shares						100,000
Per share value of shares purchased by private investor \| $ / shares	$ 3.15				$ 3.15	$ 3.15
Aggregate value of shares issued to lender						$ 1,000,000
Note 1 [Member] \| Loan Modification March Two Thousand Sixteen [Member] \| Oceanica Resources S. de. R.L [Member]
Debt Instrument [Line Items]
Per share value of shares purchased by private investor \| $ / shares	$ 1.00				$ 1.00	$ 1.00
Note 1 [Member] \| First Tranche [Member]
Debt Instrument [Line Items]
Loan amount borrowed													5,000,000
Unused borrowing capacity													5,000,000
Call option	$ 5,000,000				$ 5,000,000	$ 5,000,000
Note 1 [Member] \| Second Tranche [Member]
Debt Instrument [Line Items]
Aggregate amount issuable												$ 2,500,000
Unused borrowing capacity													2,500,000
Interest rate, stated percentage										11.00%		8.00%
Call option	2,500,000				2,500,000	2,500,000
Note 1 [Member] \| Third Tranche [Member]
Debt Instrument [Line Items]
Unused borrowing capacity													$ 2,500,000
Call option	2,500,000				2,500,000	2,500,000
Note 1 [Member] \| Amended Promissory Notes [Member]
Debt Instrument [Line Items]
Extinguishment of debt, amount									2,200,000
Notes ceased to bear interest, amount									$ 5,000,000
Debt instrument maturity date									Dec. 31, 2017
Outstanding notes balance									$ 2,800,000
Long term notes	$ 2,800,000				$ 2,800,000	$ 2,800,000
Loan Modification [Member]
Debt Instrument [Line Items]
Conversion price of Notes \| $ / shares	$ 1.00				$ 1.00	$ 1.00
BCF amount recorded						$ 456,250
Expected interest expenses						20,524
Loans payable	$ 2,800,000				$ 2,800,000	2,800,000
Debt component in loans payable	1,450,397				1,450,397	$ 1,450,397
Loan Modification [Member] \| Oceanica Resources S. de. R.L [Member]
Debt Instrument [Line Items]
Debt instrument maturity date						Dec. 31, 2017
Call option			$ 10,000,000
Equity component in loans payable	$ 1,349,603				$ 1,349,603	$ 1,349,603
Loan Modification [Member] \| Monaco [Member]
Debt Instrument [Line Items]
Per share value of shares purchased by private investor \| $ / shares	$ 3.15				$ 3.15	$ 3.15
Number of options eliminated under share purchase option \| shares	3,174,603				3,174,603	3,174,603
Loan Modification [Member] \| First Tranche [Member]
Debt Instrument [Line Items]
Call option			$ 5,000,000
Agreement description						Monaco agreed to cease interest as of December 10, 2015 and reduce the loan balance by (i) the cash or other value received by Monaco from the SS Central America shipwreck project (“SSCA”) or (ii) if the proceeds received by Monaco from the SSCA project are insufficient to pay off the loan balance by December 31, 2017, then Monaco can seek repayment of the remaining outstanding balance on the loan by withholding Odyssey’s 21.25% “additional consideration” in new shipwreck projects performed for Monaco in the future.
Additional consideration percentage			21.25%
Loan Modification [Member] \| Second Tranche [Member]
Debt Instrument [Line Items]
Aggregate amount issuable			$ 300,000
Debt instrument maturity date			Dec. 31, 2017
Call option			$ 2,500,000
Reduced principal amount			$ 2,200,000
Loan Modification [Member] \| Third Tranche [Member]
Debt Instrument [Line Items]
Debt instrument maturity date			Dec. 31, 2017
Call option			$ 2,500,000
Note 2 [Member]
Debt Instrument [Line Items]
Aggregate amount issuable	$ 1,825,000				$ 1,825,000	$ 1,825,000
Debt instrument maturity date						Apr. 01, 2018
Interest rate, stated percentage	10.00%				10.00%	10.00%
Loan amount borrowed	$ 1,075,000				$ 750,000
Loans payable	1,378,472				1,378,472	$ 1,378,472
Note 2 [Member] \| Monaco Notes [Member]
Debt Instrument [Line Items]
Aggregate amount issuable	2,800,000				2,800,000	2,800,000
Equity component in loans payable	$ 1,063,487				$ 1,063,487	$ 1,063,487
Note 2 [Member] \| Oceanica Resources S. de. R.L [Member]
Debt Instrument [Line Items]
Conversion price of Notes \| $ / shares	$ 1.00				$ 1.00	$ 1.00
Notes Payable, Other Payables [Member] \| Epsilon Acquisitions, LLC [Member]
Debt Instrument [Line Items]
Aggregate amount issuable		$ 3,000,000
Debt instrument maturity date		Mar. 18, 2017
Interest rate, stated percentage		10.00%
Conversion price of Notes \| $ / shares		$ 5.00
BCF amount recorded						$ 96,000
Debt discount amortization amount						3,859
Installment amount of Notes		$ 1,500,000
Notes security description		We granted security interests to Epsilon in (a) the 54 million cuotas (a unit of ownership under Panamanian law) of Oceanica Resources S. de R.L. ("Oceanica") held by our wholly owned subsidiary, Odyssey Marine Enterprises, Ltd. ("OME"), (b) all notes and other receivables from Oceanica and its subsidiary owed to the Odyssey Pledgors, and (c) all of the outstanding equity in OME.
Conversion price of Notes upon default \| $ / shares		$ 2.50
Security deposit liability		$ 54,000,000
Number of trading days		75 days
Outstanding principal of the note	$ 1,550,000				$ 1,550,000	1,550,000
Lender's out of pocket costs						$ 50,000
Notes Payable, Other Payables [Member] \| MINOSA [Member]
Debt Instrument [Line Items]
Aggregate amount issuable		$ 14,750,000
Debt instrument, number of shares \| shares		100,000
Debt Instrument, acceleration clause description		The obligations under the Note may be accelerated upon the occurrence of specified events of default including (a) OME’s failure to pay any amount payable under the Note on the date due and payable; (b) OME or we fail to perform or observe any term, covenant, or agreement in the Note or the related documents, subject to a five-day cure period; (c) an event of default or material breach by OME, us or any of our affiliates under any of the other loan documents shall have occurred and all grace periods, if any, applicable thereto shall have expired; (d) the Stock Purchase Agreement shall have been terminated; (e) specified dissolution, liquidation, insolvency, bankruptcy, reorganization, or similar cases or actions are commenced by or against OME or any of its subsidiaries, in specified circumstances unless dismissed or stayed within 60 days; (f) the entry of judgment or award against OME or any of its subsidiaries in excess or $100,000; and (g) a change in control (as defined in the Note) occurs.