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Note 9 - Derivative Financial Instruments (Details) - Foreign Currency Exchange Contracts - USD ($)
Jun. 30, 2015
Jun. 30, 2014
Euro Member Countries, Euro    
Note 9 - Derivative Financial Instruments (Details) - Foreign Currency Exchange Contracts [Line Items]    
Derivative, Notional Amount $ 10,134,797 $ 24,289,064
Canada, Dollars    
Note 9 - Derivative Financial Instruments (Details) - Foreign Currency Exchange Contracts [Line Items]    
Derivative, Notional Amount   3,600,000
United Kingdom, Pounds    
Note 9 - Derivative Financial Instruments (Details) - Foreign Currency Exchange Contracts [Line Items]    
Derivative, Notional Amount $ 1,730,542 $ 3,975,192