Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2019
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Asset Retirement Obligations
The following table summarizes the changes in the Company’s asset retirement obligations (“ARO”) associated with its working interests in oil and gas properties for the periods presented:
(in thousands)
December 31, 2019
 
December 31, 2018
Asset retirement obligations, beginning of period
$
13,895

 
$
12,161

Liabilities incurred
1,393

 
1,535

Liabilities acquired
1,167

 
165

Liabilities divested and settled
(1,361
)
 
(673
)
Accretion expense
912

 
791

Revisions to estimated cash flows
868

 
(84
)
Asset retirement obligations, end of period
$
16,874

 
$
13,895