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Revenue Recognition - Disaggregated Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | $ 402,039 | $ 271,059 | $ 1,150,558 | $ 825,209
E&P |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 335,327 | 215,636 | 947,013 | 668,849
E&P | Crude oil revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 205,731 | 155,052 | 598,278 | 448,904
E&P | Purchased crude oil sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 53,562 | 35,442 | 163,785 | 144,719
E&P | Natural gas revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 75,905 | 24,525 | 184,046 | 63,631
E&P | Purchased natural gas sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 8 | 308 | 362 | 4,909
E&P | Other services revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 121 | 309 | 542 | 6,686
Midstream Total |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 66,712 | 55,423 | 203,545 | 156,360
Midstream Total | Purchased crude oil sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 | 8,444 | 19,738 | 18,196
Midstream Total | Crude oil, natural gas and NGL revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 22,111 | 22,682 | 65,225 | 72,267
Midstream Total | Produced and flowback water revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 10,312 | 8,801 | 25,230 | 27,300
Midstream Total | Total midstream service revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 32,423 | 31,483 | 90,455 | 99,567
Midstream Total | Crude oil, natural gas and NGL revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 33,845 | 15,100 | 91,671 | 35,707
Midstream Total | Freshwater revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 444 | 396 | 1,681 | 2,890
Midstream Total | Total midstream product revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | $ 34,289 | $ 23,940 | $ 113,090 | $ 56,793

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