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Note 19 - Financial Instruments - Fair Value of Assets and Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Forward contracts-liability position   $ (85)
Forward contracts-asset position $ 416  
Interest rate swaps-liability position (7,741) (15,314)
Total (7,325) (15,399)
Fair Value, Inputs, Level 1 [Member]    
Forward contracts-liability position   0
Forward contracts-asset position 0  
Interest rate swaps-liability position 0 0
Total 0 0
Fair Value, Inputs, Level 2 [Member]    
Forward contracts-liability position   (85)
Forward contracts-asset position 416  
Interest rate swaps-liability position (7,741) (15,314)
Total (7,325) (15,399)
Fair Value, Inputs, Level 3 [Member]    
Forward contracts-liability position   0
Forward contracts-asset position 0  
Interest rate swaps-liability position 0 0
Total $ 0 $ 0