Accounts Receivable - Additional Information (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reserves for doubtful accounts	$ 4,631,593	$ 5,131,593
Recoupment of operations and research costs	3,506,960
Neptune Minerals, Inc. [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reserves for doubtful accounts	5,131,593
Dorado Ocean Resources, Ltd. [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reserves for doubtful accounts	$ 4,631,593