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Subsequent Event - Additional Information (Detail) - USD ($)
 9 Months Ended
Oct. 01, 2016
Sep. 30, 2016
Mar. 31, 2016
Mar. 18, 2016
May 10, 2012
Subsequent Event [Line Items]          
Aggregate amount of Notes         $ 8,000,000
Warrant right exercise price     $ 1.00    
Notes Payable, Other Payables [Member] | Epsilon Acquisitions, LLC [Member]          
Subsequent Event [Line Items]          
Aggregate amount of Notes       $ 3,000,000  
Interest rate, stated percentage       10.00%  
Conversion price of Notes       $ 5.00  
Debt Instrument, acceleration clause description   The obligations under the Restated Note may be accelerated upon the occurrence of specified events of default including (a) OME’s failure to pay any amount payable under the Restated Note on the date due and payable; (b) OME’s or our failure to perform or observe any term, covenant, or agreement in the Restated Note or the related documents, subject to a five-day cure period; (c) the occurrence and expiration of all applicable grace periods, if any, of an event of default or material breach by OME, us or any of our affiliates under any of the other loan documents; (d) the termination of the Stock Purchase Agreement; (e) commencement of certain specified dissolution, liquidation, insolvency, bankruptcy, reorganization, or similar cases or actions by or against OME or any of its subsidiaries, in specified circumstances unless dismissed or stayed within 60 days; (f) the entry of a judgment or award against OME or any of its subsidiaries in excess of $100,000; and (g) the occurrence of a change in control (as defined in the Restated Note).      
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.      
Security deposit liability       $ 54,000,000  
Warrant Expiration Date   Oct. 01, 2021      
Warrant right exercise price description   Warrant shall be the number determined by multiplying 120,000 by a fraction, (a) the numerator of which is the aggregate principal amount of advances that have been extended to the OME by Epsilon pursuant to the Restated Note Purchase Agreement on or after the date of the Warrant and prior to the date of such failure and (b) the denominator of which is $3.0 million.      
Subsequent Event [Member] | Maximum [Member] | Tranche [Member]          
Subsequent Event [Line Items]          
Conversion of stock, shares Issued 1,388,769        
Subsequent Event [Member] | Notes Payable, Other Payables [Member] | Epsilon Acquisitions, LLC [Member]          
Subsequent Event [Line Items]          
Aggregate amount of Notes $ 6,000,000        
Notes amount advanced 3,000,000        
Notes amount remaining $ 3,000,000        
Interest rate, stated percentage 10.00%        
Notes amount remaining advanced $ 1,000,000        
Conversion price of Notes $ 5.00        
Debt instrument, number of shares 100,000        
Security deposit liability $ 54,000,000        
Common stock purchase warrant 120,000        
Warrant right exercise price $ 3.52        
Subsequent Event [Member] | Notes Payable, Other Payables [Member] | Maximum [Member] | Epsilon Acquisitions, LLC [Member]          
Subsequent Event [Line Items]          
Aggregate Offering Price $ 3,000,000