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Note 16 - Derivative Financial Instruments (Detail) - Gain or Loss on Derivatives Not Designated as Hedging Instruments (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Total loss on derivatives	$ (637,403)	$ (1,498,122)	$ (4,221,817)
FFA Contract (Member)
FFA contracts – Fair value		(574,336)	9,692,455
FFA contracts - Realized loss	(2,247)	910,088	(10,875,776)
Interest Rate Swap [Member]
Interest rate – Fair value	1,057,928	(76,516)	(1,468,650)
Interest rate contracts - Realized loss	$ (1,693,084)	$ (1,758,158)	$ (1,569,846)

X

- Definition

Loss included in earnings for the period from the change in fair value of derivative instruments not designated as hedging instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

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- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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Amount of gain (loss) included in earnings for the period from the increase (decrease) in fair value of interest rate derivatives not designated as hedging instruments.

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Fair value as of the balance sheet date of all derivative assets not designated as hedging instruments.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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Net fair value of all derivative instruments not designated as a hedging instrument.

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