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Note 8 - Derivative Instruments (Tables)
6 Months Ended
Jun. 30, 2020
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)

 

2020

  

2019

  

2020

  

2019

 

Fixed interest rate hedge

 $(394) $(22) $(596) $(31)

Metals swaps

  85   3   (27)  133 

Embedded customer derivatives

  (85)  (3)  27   (133)

Total loss

 $(394) $(22) $(596) $(31)