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Note 4 - Derivative Instrument Assets And Liabilities (Details) - Fair value of derivative instruments in the consolidated balance sheets (USD $)	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Fair value of derivative instruments in the consolidated balance sheets [Abstract]
Foreign currency forward contracts designated as cash flow hedges	Derivative instruments
Foreign currency forward contracts designated as cash flow hedges	$ (612,351)	$ 377,703
Foreign currency forward contracts not designated as cash flow hedges	Derivative instruments
Foreign currency forward contracts not designated as cash flow hedges	(188,284)	67,079
Total foreign currency forward contracts	Derivative instruments
Total foreign currency forward contracts	$ (800,635)	$ 444,782

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Fair value before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=28370219&loc=SL20226000-175313



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-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=20225523&loc=SL20225862-175312



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-Publisher FASB

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-Topic 815

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-Section 50

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Description of where the foreign currency derivatives designated as cash flow hedges are reported in the balance sheet.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959



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-Publisher FASB

-Name Accounting Standards Codification

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-Section S99

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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



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Fair value as of the balance sheet date of all foreign currency derivatives not designated as hedging instruments.

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-Publisher FASB

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Fair value as of the balance sheet date of all derivatives designated as foreign currency fair value hedging instruments.

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-Publisher FASB

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