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Asset Retirement Obligations (Tables)
6 Months Ended
Jun. 30, 2020
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Change in Asset Retirement Obligation

The following table presents the changes in carrying amounts of the asset retirement obligations associated with our working interests in crude oil and natural gas properties:
 
Amount
 
(in thousands)
 
 
Balance at December 31, 2019
$
127,251

Obligations incurred with development activities and other
7,308

Obligations incurred with acquisition
45,639

Accretion expense
4,978

Obligations discharged with asset retirements
(20,221
)
Obligations discharged with divestitures
(85
)
Balance at June 30, 2020
164,870

Current portion
(30,350
)
Long-term portion
$
134,520