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Note 11 - Derivatives and Fair Value Disclosures (Detail) - Effect of Derivative Instruments on the Statements of Income (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Total loss on derivatives	$ (1,153,309)	$ (2,760,836)
Other Comprehensive Income (Loss) [Member] | Interest Rate Swap [Member]
Interest Rate Swap - Reclassification from OCI	(11,830)	(369,045)
Interest Rate Swap - Change in fair value	2,462,062	931,949
Interest Rate Swap - Realized loss	(3,603,541)	(4,318,849)
Other Comprehensive Income (Loss) [Member] | Foreign Exchange Future [Member]
Foreign Currency Contract - Change in Fair Value		(3,241,345)
Foreign Currency Contract - Realized gain		$ 4,236,454

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- Definition

Derivative Instruments Not Designated As Hedging Instruments Realized Loss

+ References

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- Definition

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- Definition

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- Definition

Gain 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

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959



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-Paragraph 45

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- Definition

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959



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