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Note 5 - Derivative Instruments and Hedging Activities - Fair Value of Derivative Instruments in the Consolidated Balance Sheets (Details) - Derivative Instruments [Member] - USD ($) | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Foreign currency forward contracts | $ 559,663 | $ 172,888
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |
Foreign currency forward contracts | 505,232 | 155,560
Not Designated as Hedging Instrument [Member] |  |
Foreign currency forward contracts | $ 54,431 | $ 17,823

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- Definition Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps. + References No definition available. + Details
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Period Type: | instant

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- Details
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- Details
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- Details
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- Details
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