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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2021
Fair Value Disclosures [Abstract]  
Hierarchy of Fair Value, Assets and Liabilities Measured on Recurring Basis
The following tables set forth by level, within the fair value hierarchy, the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis:
Successor
Fair value at June 30, 2021
Level 1Level 2Level 3Total
(In thousands)
Assets:
Permian Basin Sale Contingent Consideration
$— $32,860 $— $32,860 
Total assets$— $32,860 $— $32,860 
Liabilities:
Commodity derivative instruments$— $381,649 $— $381,649 
Total liabilities$— $381,649 $— $381,649 
Successor
 Fair value at December 31, 2020
 Level 1Level 2Level 3Total
 (In thousands)
Assets:
Commodity derivative instruments$— $467 $— $467 
Total assets$— $467 $— $467 
Liabilities:
Commodity derivative instruments$— $94,558 $— $94,558 
Total liabilities$— $94,558 $— $94,558