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Note 4 - Derivative Instrument Assets/Liabilities (Details) - Summary of the Company's Forward Exchange Contracts to Trade U.S. Dollars in Exchange for Canadian Dollars (USD $) | Dec. 31, 2013 | Dec. 31, 2012
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Derivative [Line Items] |  |
Foreign currency forward contracts not designated as cash flow hedges | $ (372,593) | $ 67,079
Total foreign currency forward contracts | (491,098) | 444,782
Derivative Instruments [Member] |  |
Derivative [Line Items] |  |
Foreign currency forward contracts designated as cash flow hedges | $ (118,505) | $ 377,703

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