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Note 18 - Investment in Joint Venture (Details) (USD $) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Mar. 25, 2012 | Mar. 25, 2011
Note 18 - Investment in Joint Venture (Details) [Line Items] |  |  |  |  |  |
Investment in Joint Venture, Total Maximum Investment by Members |  |  |  |  |  | $ 175,000,000
Conversion Ratio, Company Market Value Multiplier |  |  |  |  | 0.925 |
Revenue from Related Parties |  | 240,000 | 240,000 | 240,000 |  |
Payments to Acquire Equity Method Investments | 6,250,000 |  |  |  |  |
Equity Method Investment, increase in maximum investment |  | 25,000,000 |  |  |  |
Income (Loss) from Equity Method Investments |  | (2,023,191) | (1,219,692) | (2,415) |  |
Equity Method Investments |  | 21,215,870 | 16,989,061 |  |  |
Euroseas Ltd (Member) |  |  |  |  |  |
Note 18 - Investment in Joint Venture (Details) [Line Items] |  |  |  |  |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Maximum Investment |  |  |  |  |  | 25,000,000
Equity Method Investment, Ownership Percentage, Maximum Percentage |  |  |  |  |  | 14.286%
Elton Park and Rhone [Member] |  |  |  |  |  |
Note 18 - Investment in Joint Venture (Details) [Line Items] |  |  |  |  |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Maximum Investment |  |  |  |  |  | $ 75,000,000
Equity Method Investment, Ownership Percentage, Maximum Percentage |  |  |  |  |  | 42.857%

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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570 + Details
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- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Related Parties -URI http://asc.fasb.org/extlink&oid=16382449 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 07 -Paragraph b -Subparagraph 1 -Article 6 + Details
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