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Note 4 - Derivative instrument assets/liabilities: (Detail) - Summary of Company's forward exchange contracts to trade U.S. dollars in exchange for Canadian dollars as follows:y had forward exchange contracts to trade U.S. dollars in exchange f (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011
Foreign currency forward contracts designated as cash flow hedges | Derivative instruments |
Foreign currency forward contracts designated as cash flow hedges | $ 377,703 |
Foreign currency forward contracts not designated as cash flow hedges | Derivative instruments |
Foreign currency forward contracts not designated as cash flow hedges | 67,079 |
Foreign currency forward contracts not designated as cash flow hedges |  | (699,483)
Total foreign currency forward contracts | Derivative instruments |
Total foreign currency forward contracts | 444,782 |
Total foreign currency forward contracts |  | $ (699,483)

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- Definition Fair value as of the balance sheet date of all foreign currency derivative assets not designated as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 + Details
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