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Note 16 - Financial Instruments (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Not Designated as Hedging Instrument [Member]        
Note 16 - Financial Instruments (Details) [Line Items]        
Derivatives, Hedging Instruments $ 0 $ 0 $ 0 $ 0
Forward Contracts [Member]        
Note 16 - Financial Instruments (Details) [Line Items]        
Derivative Asset, Notional Amount $ 398,000,000   $ 398,000,000