XML 47 R70.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Redeemable Series G Preferred Stock - Allocation of Cash from Series G Preferred and Warrants Issued (Parenthetical) (Detail) | 9 Months Ended
--- | ---
Sep. 30, 2013
Series G Convertible Preferred Stock [Member] |
Temporary Equity [Line Items] |
Estimated period for redemption of preferred stock | Oct. 31, 2013
Minimum [Member] |
Temporary Equity [Line Items] |
Credit-risk adjusted rates | 3.98%
Maximum [Member] |
Temporary Equity [Line Items] |
Credit-risk adjusted rates | 4.89%

X
- Definition Credit risk adjustment rate. + References No definition available. + Details
Name: | omex_CreditRiskAdjustmentRate
Namespace Prefix: | omex_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the preferred stock has been redeemed, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 + Details
Name: | us-gaap_PreferredStockRedemptionDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TemporaryEquityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration