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Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2019
Asset Retirement Obligation [Abstract]  
Schedule of Change in Asset Retirement Obligation
The reconciliation of changes in asset retirement obligations is as follows:
 
 
As of December 31,
 
 
2019
 
2018
Balance, Beginning of Year
 
$
38,554

 
$
204,070

Obligations Divested (Note 6)
 
—

 
(196,643
)
Accretion Expense
 
9,458

 
9,874

Obligations Incurred
 
2,933

 
4,795

Obligations Settled
 
(4,231
)
 
(5,323
)
Revisions in Estimated Cash Flows
 
21,740

 
21,781

Balance, End of Year
 
$
68,454

 
$
38,554