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Note 14 - Financial Derivatives (Details) (USD $)
9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Positive Fair Value Member
   
Note 14 - Financial Derivatives (Details) [Line Items]    
Notional Amount Of Option Contract $ 101,000 $ 209,000
Open Option Contracts Written, at Fair Value   (2,000)
Sum of Spot and Forward Contract Notional Amount 277,400,000 188,100,000
Increase Decrease in Fair Value 5,800,000 2,900,000
Negative Fair Value Member
   
Note 14 - Financial Derivatives (Details) [Line Items]    
Open Option Contracts Written, at Fair Value (1,000)  
Sum of Spot and Forward Contract Notional Amount 185,600,000 133,700,000
Increase Decrease in Fair Value $ (4,700,000) $ (1,600,000)