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Investments in Unconsolidated Entities (Details) (USD $)
 1 Months Ended 3 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended
Apr. 30, 2010
Mar. 31, 2013
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2009
SMM Project, LLC [Member]
sqkm
Apr. 30, 2010
Dorado Ocean Resources, Ltd. [Member]
Dec. 31, 2011
Dorado Ocean Resources, Ltd. [Member]
Mar. 31, 2013
Dorado Ocean Resources, Ltd. [Member]
Mar. 31, 2013
Neptune Minerals, Inc. [Member]
Dec. 31, 2011
Neptune Minerals, Inc. [Member]
Mar. 31, 2013
Chatham Rock Phosphate Ltd [Member]
Jun. 30, 2012
Chatham Rock Phosphate Ltd [Member]
Business Acquisition [Line Items]                        
Book value of investment         $ 500,000              
Ownership percentage         25.00% 41.25%     30.00%      
Mineral exploration area         150,000              
Common stock, shares issued   78,596,929   75,416,203   450            
Acquisition of additional shares           1,200       2,066,600    
Fair value of investment           2,000,000            
Shares issued per each share exchanged                   1,000    
Shares received from exchange                   1,650,000    
Shares owned             1,650          
Net share position in NMI                 6,216,600      
Income (loss) from unconsolidated entity               959,000        
Deep sea mining exploratory services                       1,680,000
Shares received from CRP                     9,320,348  
Equity stake in CRP                     7.30%  
Investments in Unconsolidated Entities (Textual) [Abstract]                        
Investment repayment period 3 years                      
Marine service account receivables 2,000,000                      
Accounts receivable transferred between related parties     8,227,675                  
Accounts receivable converted to common shares, amount   $ 3,130,435 $ 2,500,000                  
Converted common shares received     2,500,000