Annual report pursuant to Section 13 and 15(d)

Note 6 - Asset Retirement Obligations (Tables)

v3.19.3.a.u2
Note 6 - Asset Retirement Obligations (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Change in Asset Retirement Obligation [Table Text Block]
   
Year Ended December 31,
 
   
2019
   
2018
 
Asset retirement obligations, beginning of period
  $
310,137
    $
300,446
 
Liabilities settled
   
(11,443
)    
(28,617
)
Accretion of discount
   
19,460
     
18,431
 
Liabilities incurred and assumed through acquisition
   
29,887
     
4,286
 
Revisions of estimated liabilities (1) (2)
   
7,553
     
15,591
 
Asset retirement obligations, end of period
   
355,594
     
310,137
 
Less current portion
   
21,991
     
24,994
 
Long-term
  $
333,603
    $
285,143