Quarterly report pursuant to Section 13 or 15(d)

BASIS OF PRESENTATION (Supplemental Cash and Non Cash Information) (Details)

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BASIS OF PRESENTATION (Supplemental Cash and Non Cash Information) (Details) - USD ($)
$ in Thousands
 4 Months Ended 5 Months Ended 9 Months Ended
Sep. 30, 2021
May 17, 2021
Sep. 30, 2020
Supplemental disclosure of cash flow information:      
Cash paid for reorganization items, net $ 42,202 $ 87,199 $ 0
Interest payments 6,465 7,272 73,979
Changes in operating assets and liabilities:      
(Increase) decrease in accounts receivable - oil and natural gas sales (5,230) (60,832) 28,767
(Increase) decrease in accounts receivable - joint interest and other 5,536 (3,005) 32,827
Increase (decrease) in accounts payable and accrued liabilities (48,903) 79,193 (40,552)
(Increase) decrease in prepaid expenses 7,231 135,471 (45,620)
(Increase) decrease in other assets 106 3,067 (2,721)
Total changes in operating assets and liabilities (41,260) 153,894 (27,299)
Supplemental disclosure of non-cash transactions:      
Capitalized stock-based compensation 484 930 2,189
Asset retirement obligation capitalized 55 546 2,343
Asset retirement obligation removed due to divestiture 0 0 (2,033)
Interest capitalized 117 0 907
Fair value of contingent consideration asset on date of divestiture 0 0 23,090
Release of New Common Stock Held in Reserve 23,893 0 0
Foreign currency translation gain (loss) on equity method investments $ 0 $ 2,570 $ (4,497)