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Fresh Start Accounting - Property, Plant, and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Nov. 19, 2020
Reorganization, Chapter 11 [Line Items]      
Oil and gas properties $ 1,395,837 $ 810,604 $ 795,247
Less: accumulated depreciation, depletion, amortization and impairment (124,386) (14,284) 0
Other property and equipment 48,981 51,505 44,999
Less: Accumulated depreciation and impairment 17,109 1,881  
Other property and equipment, net 31,872 49,624  
Total property, plant and equipment, net $ 1,320,432 $ 847,825 840,246
Discontinued Operations, Held-for-sale      
Reorganization, Chapter 11 [Line Items]      
Less: accumulated depreciation, depletion, amortization and impairment     (247,162)
Interest in OMP GP     28,000
Customer contracts     15,000
Equipment inventory     705
Other property and equipment     312,657
Fair Value      
Reorganization, Chapter 11 [Line Items]      
Other property and equipment     44,999
Less: Accumulated depreciation and impairment     0
Other property and equipment, net     44,999
Total property, plant and equipment, net     840,246
Historical Book Value      
Reorganization, Chapter 11 [Line Items]      
Other property and equipment     105,410
Less: Accumulated depreciation and impairment     73,200
Other property and equipment, net     32,210
Total property, plant and equipment, net     1,073,941
Proved Oil and Gas Properties | Discontinued Operations, Held-for-sale      
Reorganization, Chapter 11 [Line Items]      
Total property, plant and equipment, net     44,533
Proved Oil and Gas Properties | Fair Value      
Reorganization, Chapter 11 [Line Items]      
Oil and gas properties     755,247
Less: accumulated depreciation, depletion, amortization and impairment     0
Total property, plant and equipment, net     755,247
Proved Oil and Gas Properties | Historical Book Value      
Reorganization, Chapter 11 [Line Items]      
Oil and gas properties     9,126,507
Less: accumulated depreciation, depletion, amortization and impairment     (8,259,334)
Total property, plant and equipment, net     867,173
Unproved oil and gas properties | Fair Value      
Reorganization, Chapter 11 [Line Items]      
Oil and gas properties     40,000
Unproved oil and gas properties | Historical Book Value      
Reorganization, Chapter 11 [Line Items]      
Oil and gas properties     $ 174,558