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Note 5 - Derivative Instruments (Tables)
6 Months Ended
Jun. 30, 2016
Notes Tables  
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]
       
 
 
Net Gain (Loss) Recognized
 
 
 
For the Three Months
Ended June 30,
 
 
For the Six Months
Ended June 30,
 
(in thousands)
 
2016
 
 
2015
 
 
2016
 
 
2015
 
Interest rate swap (CTI)
  $ (13 )   $ (18 )   $ (33 )   $ (35 )
Fixed interest rate swap (ABL)
    (37 )     (95 )     (98 )     (194 )
Metals swaps
    138       (270 )     62       (1,387 )
Embedded customer derivatives
    (138 )     270       (62 )     1,387  
Total loss
  $ (50 )   $ (113 )   $ (131 )   $ (229 )