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Note 4 - Inventories (Details) - Inventories (USD $)	Sep. 30, 2013	Dec. 31, 2012
Inventories [Abstract]
Bunkers	$ 1,862,235	$ 1,854,589
Lubricants	1,479,596	1,297,818
Total	$ 3,341,831	$ 3,152,407

X

- Details

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- Definition

Carrying amount (lower of cost or market) as of the balance sheet date of inventories of bunkers.

+ References

No definition available.

+ Details

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- Definition

Carrying amount (lower of cost or market) as of the balance sheet date of inventories of lubricants.

+ References

No definition available.

+ Details

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X

- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ 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 210.5-02.6(a))

-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 330

-SubTopic 10

-Section 35

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

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