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Note 7 - Derivative Instrument Assets And Liabilities (Tables)
 9 Months Ended
Sep. 30, 2012
Schedule of Derivative Instruments [Table Text Block]

Maturity date

Notional

amount of

U.S. dollars

Weighted

average

exchange rate

of U.S. dollars

Fair value

                         

October – December, 2012

    5,100,000     0.9855     5,108

January – March, 2013

    6,000,000     1.0277     249,008

April – May, 2013

    4,000,000     1.0385     201,548

Total

  $ 15,100,000     1.0163   $ 455,664