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Note 2 - Derivative Instruments and Hedging Activities (Details) - Fair Value of Derivatives (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Commodity Contract [Member]
    
Note 2 - Derivative Instruments and Hedging Activities (Details) - Fair Value of Derivatives [Line Items]    
Net derivatives $ 77 $ 69
Foreign Exchange Contract [Member]
    
Note 2 - Derivative Instruments and Hedging Activities (Details) - Fair Value of Derivatives [Line Items]    
Net derivatives (97) 56
Interest Rate Swap [Member]
    
Note 2 - Derivative Instruments and Hedging Activities (Details) - Fair Value of Derivatives [Line Items]    
Net derivatives $ (1,435) $ 1,236