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Note 8 - Derivative Instruments (Tables)
3 Months Ended
Mar. 31, 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 March 31,

 

(in thousands)

 

2021

  

2020

 

Fixed interest rate hedge

 $(463) $(202)

Metals swaps

  (17)  (112)

Embedded customer derivatives

  17   112 

Total loss

 $(463) $(202)