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Note 14 - Asset Retirement Obligation
12 Months Ended
Dec. 31, 2021
Notes to Financial Statements  
Asset Retirement Obligation Disclosure [Text Block]

NOTE 14 — ASSET RETIREMENT OBLIGATION

 

The following table presents a reconciliation of the beginning and ending aggregate carrying amount of asset retirement obligation for the years presented below:

 

  

Year Ended December 31,

 
  

2021

  

2020

  

2019

 
  

(Dollars in thousands)

 

Balance at beginning of year

 $63,457  $50,183  $39,475 

Revision in estimated cash flows

  10,504   (165)  (335)

Liabilities incurred and acquired

  6,953   10,207   8,334 

Accretion expense

  3,977   3,232   2,709 

Balance at end of year

 $84,891  $63,457  $50,183