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Supplemental Oil and Natural Gas Disclosures (Unaudited) - Standardized Measure of Discounted Future Net Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Consolidated operations |  |  |
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Roll Forward] |  |  |
Balance at beginning of period | $ 1,327,860 | $ 3,110,848 | $ 4,207,347
Net change in prices and production costs | 3,330,299 | (1,184,939) | (821,874)
Net change in future development costs | 117,333 | 160,465 | (59,359)
Sales and transfers of oil and natural gas produced, net of production expenses | (872,521) | (290,053) | (568,665)
Extensions, discoveries, additions and improved recovery, net of related costs | 162,657 | 31,688 | 182,697
Purchases of reserves in place | 1,236,388 | 176,480 | 0
Sales of reserves in place | (84,095) | 0 | 0
Revisions of previous quantity estimates | (295,234) | (887,395) | (226,561)
Previously estimated development costs incurred | 95,879 | 32,873 | 15,676
Net change in taxes | (184,419) | 19,350 | (19)
Accretion of discount | 124,153 | 283,954 | 424,278
Changes in timing and other | 0 | (125,411) | (42,672)
Balance at end of period | 4,958,300 | 1,327,860 | 3,110,848
Equity affiliate |  |  |
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Roll Forward] |  |  |
Balance at beginning of period | 0 | 0 | 0
Net change in prices and production costs | 0 | 0 | 0
Net change in future development costs | 0 | 0 | 0
Sales and transfers of oil and natural gas produced, net of production expenses | (1,246) | 0 | 0
Extensions, discoveries, additions and improved recovery, net of related costs | 0 | 0 | 0
Purchases of reserves in place | 26,154 | 0 | 0
Sales of reserves in place | 0 | 0 | 0
Revisions of previous quantity estimates | 0 | 0 | 0
Previously estimated development costs incurred | 0 | 0 | 0
Net change in taxes | (1,730) | 0 | 0
Accretion of discount | 0 | 0 | 0
Changes in timing and other | 0 | 0 | 0
Balance at end of period | $ 23,178 | $ 0 | $ 0

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