Consolidated Balance Sheets - USD ($)	Sep. 30, 2015	Dec. 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$ 1,840,401	$ 3,143,550
Restricted cash	212,116	520,728
Accounts receivable and other, net	596,781	6,476,049
Inventory	335,013	674,992
Other current assets	495,308	655,662
Total current assets	3,479,619	11,470,981
PROPERTY AND EQUIPMENT
Equipment and office fixtures	24,320,000	24,895,343
Building and land and other	196,381	3,758,688
Building and land held for sale	3,567,722	1,024,999
Accumulated depreciation	(22,778,808)	(22,443,492)
Total property and equipment	5,305,295	7,235,538
NON-CURRENT ASSETS
Accounts receivable	6,290,465
Inventory	4,478,595	5,110,967
Other non-current assets	1,008,019	1,272,053
Total non-current assets	11,777,079	6,383,020
Total assets	20,561,993	25,089,539
CURRENT LIABILITIES
Accounts payable	2,425,425	5,070,973
Accrued expenses and other	3,687,821	2,387,962
Deferred income	383,148
Derivative liabilities	2,482,190	2,226,445
Mortgage and loans payable	30,783,245	9,356,724
Total current liabilities	39,761,829	19,042,104
LONG-TERM LIABILITIES
Mortgage and loans payable	4,385,553	11,808,157
Deferred income and revenue participation rights	4,643,750	4,643,750
Total long-term liabilities	9,029,303	16,451,907
Total liabilities	$ 48,791,132	$ 35,494,011
Commitments and contingencies (NOTE H)
STOCKHOLDERS' EQUITY/(DEFICIT)
Preferred stock	$ 0	$ 0
Common stock - $.0001 par value; 150,000,000 shares authorized; 89,796,469 and 85,582,502 issued and outstanding	8,980	8,558
Additional paid-in capital	202,976,283	198,323,630
Accumulated deficit	(222,848,197)	(202,427,252)
Total stockholders' equity/(deficit) before non-controlling interest	(19,862,934)	(4,095,061)
Non-controlling interest	(8,366,205)	(6,309,411)
Total stockholders' equity/(deficit)	(28,229,139)	(10,404,472)
Total liabilities and stockholders' equity/(deficit)	$ 20,561,993	25,089,539
Series D Convertible Preferred Stock [Member]
STOCKHOLDERS' EQUITY/(DEFICIT)
Preferred stock		$ 3

Noncurrent assets excluding property plant and equipment.

No definition available.

Name:	omex_NoncurrentAssetsExcludingPropertyPlantAndEquipment
Namespace Prefix:	omex_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).