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Note 10 - Derivative Instruments (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]
  

Net Gain (Loss) Recognized

 

(in thousands)

 

2020

  

2019

  

2018

 

Fixed interest rate hedge

 $(1,520) $(227) $- 

Interest rate swap (CTI)

  -   -   (5)

Metals swaps

  55   291   (79)

Embedded customer derivatives

  (55)  (291)  79 

Total loss

 $(1,520) $(227) $(5)