Note 7 - Related Party Transactions (Details) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Ocean Power Technologies, Inc. [Member]
Note 7 - Related Party Transactions (Details) [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 0	$ 12,731	$ 31,025	$ 31,588
Board of Directors Chairman [Member]
Note 7 - Related Party Transactions (Details) [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 0	$ 91,703	$ 70,670	$ 91,703

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Name:	us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration