XML 19 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Cover Page - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Mar. 08, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Registrant Name ODYSSEY MARINE EXPLORATION INC    
Entity Central Index Key 0000798528    
Entity Filer Category Non-accelerated Filer    
Current Fiscal Year End Date --12-31    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Interactive Data Current Yes    
Entity Shell Company false    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Entity Address, State or Province FL    
Trading Symbol OMEX    
Title of 12(b) Security Common Stock    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   12,591,084  
Entity Public Float     $ 40.8
Entity File Number 001-31895    
Document Annual Report true    
Document Transition Report false