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Note 8 - Related Party Transactions (Detail) | 0 Months Ended | 12 Months Ended |  | 12 Months Ended
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Jan. 02, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2012 EUR (€) | Dec. 31, 2011 EUR (€) | Dec. 31, 2010 EUR (€) | Dec. 31, 2008 | Dec. 31, 2011 USD ($) | Dec. 31, 2012 Euromar LLC Joint Venture (Member) | Dec. 31, 2012 Inflation Adjusted [Member] Eurobulk Marine Holdings Inc. [Member] EUR (€) | Dec. 31, 2012 Jonathan P [Member] USD ($) | Dec. 31, 2012 Eurobulk Marine Holdings Inc. [Member] Greater Than Twenty [Member] | Dec. 31, 2012 Eurobulk Marine Holdings Inc. [Member] USD ($) | Dec. 31, 2012 Eurobulk Marine Holdings Inc. [Member] EUR (€) | Dec. 31, 2011 Eurobulk Marine Holdings Inc. [Member] USD ($) | Dec. 31, 2011 Eurobulk Marine Holdings Inc. [Member] EUR (€) | Dec. 31, 2010 Eurobulk Marine Holdings Inc. [Member] USD ($) | Dec. 31, 2008 Vessel Sales [Member] | Dec. 31, 2008 Charter Revenues [Member] | Dec. 31, 2012 Eurochart [Member] USD ($) | Dec. 31, 2011 Eurochart [Member] USD ($) | Dec. 31, 2010 Eurochart [Member] USD ($) | Dec. 31, 2012 Sentinel and More [Member] Maximum [Member] | Dec. 31, 2012 Sentinel and More [Member] USD ($) | Dec. 31, 2011 Sentinel and More [Member] USD ($) | Dec. 31, 2010 Sentinel and More [Member] USD ($) | Dec. 31, 2012 Technomar [Member] USD ($) | Dec. 31, 2011 Technomar [Member] USD ($) | Dec. 31, 2010 Technomar [Member] USD ($) | Dec. 31, 2012 Vessel Management Fees (Member) USD ($) | Dec. 31, 2011 Vessel Management Fees (Member) USD ($) | Dec. 31, 2010 Vessel Management Fees (Member) USD ($)
Related Party Transaction Daily Fee (in Euro) |  |  | € 685 | € 700 | € 665 |  |  |  | € 720 |  |  |  |  |  | € 700 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | 1,900,000 |  |  |  |  |  |  |  |  |  |  | 1,850,000 |  | 1,225,000 |  | 1,165,000 |  |  |  |  |  |  |  |  |  |  |  |  | 4,984,098 | 5,810,095 | 4,892,006
Related Party Agreement Term |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction Discount Percentage |  |  |  | 5.00% |  |  |  |  |  |  |  | 5.00% | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Vessels |  | 15 | 15 |  |  |  |  | 10 |  |  | 20 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction Daily Fee Per Vessel Per Day In Operation (in Euro) |  |  |  |  |  |  |  |  |  |  |  |  | 685 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction Daily Fee Per Vessel Per Day In Lay Up (in Euro) |  |  |  |  |  |  |  |  | 360 |  |  |  | 342.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due from Related Parties |  | 4,948,443 |  |  |  |  | 208,704 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction Commission Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00% | 1.25% |  |  |  | 5.00% |  |  |  |  |  |  |  |  |
Related Party Transaction, Expenses from Transactions with Related Party |  |  |  |  |  |  |  |  |  | 43,823 |  |  |  |  |  |  |  |  | 641,104 | 766,304 | 612,998 |  | 130,699 | 173,717 | 197,921 | 217,141 | 219,014 | 219,602 |  |  |
Related Party Transaction Commissions Received Percentage |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction Amounts Of Transaction Per Crew Member Per Month |  | $ 50 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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