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Note 22 - Fair Value of Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]
  

Fair Value Measurements at

  

Fair Value Measurements at

 
  

December 31, 2021

  

December 31, 2020

 

Description

 

Level 1

  

Level 2

  

Level 3

  

Level 1

  

Level 2

  

Level 3

 

Commodity Derivatives

 $  $(52,204) $  $  $  $ 

Interest Rate Swaps

 $  $(517) $  $  $(2,834) $ 
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]
  

December 31, 2021

  

December 31, 2020

 
  

Carrying

  

Fair

  

Carrying

  

Fair

 
  

Amount

  

Value

  

Amount

  

Value

 

Long-Term Debt

 $613,752  $

628,431

  $610,510  $517,862