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Note 8 - Derivative Instruments (Tables)
6 Months Ended
Jun. 30, 2021
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)

 

2021

  

2020

  

2021

  

2020

 

Fixed interest rate hedge

 $(468) $(394) $(931) $(596)

Metals swaps

  245   85   228   (27)

Embedded customer derivatives

  (245)  (85)  (228)  27 

Total loss

 $(468) $(394) $(931) $(596)