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Note 13 - Stock Incentive Plan (Details) (USD $) | 12 Months Ended | 7 Months Ended | 0 Months Ended | 5 Months Ended | 12 Months Ended |  |  |  |  |  | 0 Months Ended | 1 Months Ended | 0 Months Ended | 1 Months Ended | 0 Months Ended | 1 Months Ended |
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Nov. 04, 2011 Restricted Stock [Member] 2010 Plan [Member] Vesting on July 1, 2012 [Member] | Nov. 04, 2011 Restricted Stock [Member] 2010 Plan [Member] Vesting on July 1, 2013 [Member] | Nov. 03, 2013 Restricted Stock [Member] 2010 Plan [Member] Vesting on November 16, 2013 [Member] | Nov. 03, 2013 Restricted Stock [Member] 2010 Plan [Member] Vesting on November 16, 2014 [Member] | Nov. 08, 2013 Restricted Stock [Member] 2010 Plan [Member] Vesting on July 1, 2014 [Member] | Nov. 08, 2013 Restricted Stock [Member] 2010 Plan [Member] Vesting on July 1, 2015 [Member] | Jul. 01, 2012 Restricted Stock [Member] 2010 Plan [Member] | Nov. 16, 2012 Restricted Stock [Member] 2010 Plan [Member] | Jul. 02, 2013 Restricted Stock [Member] 2010 Plan [Member] | Nov. 08, 2013 Restricted Stock [Member] 2010 Plan [Member] | Nov. 03, 2012 Restricted Stock [Member] 2010 Plan [Member] | Nov. 04, 2011 Restricted Stock [Member] 2010 Plan [Member] | Dec. 31, 2013 Non-Vested [Member] | Dec. 31, 2012 Non-Vested [Member] | Nov. 03, 2012 2010 Plan [Member] Officers and Directors [Member] | Nov. 03, 2012 2010 Plan [Member] Officers and Directors [Member] | Nov. 04, 2011 2010 Plan [Member] Officers and Directors [Member] | Jun. 28, 2012 2010 Plan [Member] Officers and Directors [Member] | Nov. 03, 2012 2010 Plan [Member] Eurobulk Employees [Member] | Nov. 03, 2012 2010 Plan [Member] Eurobulk Employees [Member] | Nov. 04, 2011 2010 Plan [Member] Eurobulk Employees [Member] | Jun. 28, 2012 2010 Plan [Member] Eurobulk Employees [Member] | Nov. 08, 2013 2010 Plan [Member] | Nov. 03, 2012 2010 Plan [Member] | Nov. 04, 2011 2010 Plan [Member] | Jun. 28, 2012 2010 Plan [Member] | Jun. 15, 2010 2011 Plan [Member] | Jun. 15, 2010 2007 Plan [Member]
Note 13 - Stock Incentive Plan (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,500,000 | 10
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 253,500 | 246,000 | 164,000 | 68,480 | 196,500 | 189,000 | 126,000 | 50,720 | 450,000 | 435,000 | 290,000 | 119,200 |  |
Number of Key People Issued Awards |  |  |  |  |  |  |  |  |  |  |  |  | 19 | 17 | 17 |  |  |  |  |  |  |  |  |  |  |  |  |  | 17 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  | 50.00% | 50.00% | 50.00% | 50.00% | 50.00% | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | (403,650) |  |  |  |  |  |  |  |  | 46,400 | 26,400 | 46,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable, Current (in Dollars) | $ 13,050 | $ 36,424 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 13,050 | $ 36,424 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allocated Share-based Compensation Expense (in Dollars) | 568,334 | 671,381 | 568,488 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars) | 753,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 9 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value (in Dollars) | $ 748,967 | $ 879,648 | $ 669,075 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Liabilities -URI http://asc.fasb.org/extlink&oid=6509677 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Percentage of vesting of share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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