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Note 7 - Derivative Instruments (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]
 
 
Net Gain (Loss) Recognized
 
(in thousands)
 
2016
 
 
2015
 
 
2014
 
Interest rate swap (CTI)
   $
(66
 )   $
(77
 )   $
(100
 )
Fixed interest rate swap (ABL)
    
(98
 )    
(365
 )    
(472
 )
Cash flow metals hedges
    
-
     
(2,400
 )    
(312
 )
Metals swaps
   
68
     
(2,304
 )    
934
 
Embedded customer derivatives
    
(68
 )    
2,304
     
(934
 )
Total loss
   $
(164
 )   $
(2,842
 )   $
(884
 )