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Business Segment Information - Summarized Financial Information of Segments (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |
Total revenues | $ 355,459 | $ 387,798 |
Operating loss | 150,835 | (4,862,528) |
Total other income (expense), net | (189,754) | 273,515 |
Income (loss) before income taxes including non-controlling interests | (38,919) | (4,589,013) |
Lease operating expenses | 35,260 | 49,769 |
Gathering, processing and transportation expenses | 15,711 | 29,464 |
General and administrative expenses | 20,737 | 31,174 |
Equity-based compensation expenses | 2,198 | 6,807 |
Property, plant and equipment, net | 1,719,549 |  | $ 1,728,787
Total assets | 2,297,178 |  | 2,159,037
E&P |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 282,698 | 331,387 |
Midstream Total |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 114,117 | 124,955 |
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 355,459 | 387,798 |
Operating Segments | E&P |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 282,698 | 331,387 |
Operating loss | 103,180 | (4,817,255) |
Total other income (expense), net | (185,896) | 303,998 |
Income (loss) before income taxes including non-controlling interests | (82,716) | (4,513,257) |
Lease operating expenses | 51,064 | 65,813 |
Gathering, processing and transportation expenses | 28,105 | 42,714 |
General and administrative expenses | 15,675 | 26,673 |
Equity-based compensation expenses | 1,688 | 6,596 |
Property, plant and equipment, net | 836,605 |  | 837,020
Total assets | 1,244,395 |  | 1,093,253
Operating Segments | Midstream Total |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 72,761 | 56,411 |
Operating loss | 48,667 | (42,226) |
Total other income (expense), net | (3,858) | (30,483) |
Income (loss) before income taxes including non-controlling interests | 44,809 | (72,709) |
Lease operating expenses | 0 | 0 |
Gathering, processing and transportation expenses | 0 | 0 |
General and administrative expenses | 8,560 | 8,602 |
Equity-based compensation expenses | 510 | 428 |
Property, plant and equipment, net | 883,730 |  | 892,043
Total assets | 1,053,569 |  | 1,066,060
Inter-segment | E&P |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 0 | 0 |
Inter-segment | Midstream Total |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | 41,356 | 68,544 |
Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Total revenues | (41,356) | (68,544) |
Operating loss | (1,012) | (3,047) |
Total other income (expense), net | 0 | 0 |
Income (loss) before income taxes including non-controlling interests | (1,012) | (3,047) |
Lease operating expenses | (15,804) | (16,044) |
Gathering, processing and transportation expenses | (12,394) | (13,250) |
General and administrative expenses | (3,498) | (4,101) |
Equity-based compensation expenses | 0 | $ (217) |
Property, plant and equipment, net | (786) |  | (276)
Total assets | $ (786) |  | $ (276)

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