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Oil and Gas Producing Activities | 12 Months Ended
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Dec. 31, 2021
Oil and Gas Exploration and Production Industries Disclosures [Abstract] |
Oil and Gas Producing Activities | Oil and Gas Producing Activities Set forth below is certain information regarding the aggregate capitalized costs of oil and gas properties and costs incurred by the Company for its oil and natural gas property acquisition, development and exploration activities: Capitalized Costs
| As of December 31,
| 2021 |  | 2020
| (In thousands)
Proved properties: |  |  |
Leasehold costs | $ | 3,053,783 |  |  | $ | 3,010,760 |
Wells and related equipment and facilities | 1,702,611 |  |  | 1,636,428 |
Accumulated depreciation depletion and amortization | (1,056,317) |  |  | (901,003) |
| 3,700,077 |  |  | 3,746,185 |
Unproved properties | 302,129 |  |  | 332,765 |
| $ | 4,002,206 |  |  | $ | 4,078,950 |
Costs Incurred
| Year Ended December 31,
| 2021 |  | 2020 |  | 2019
| (In thousands)
Property acquisitions: |  |  |  |  |
Proved property | $ | 21,781 |  |  | $ | — |  |  | $ | 1,854,541 |
Unproved property | 35,871 |  |  | 7,949 |  |  | 237,210 |
Exploration and development: |  |  |  |  |
Development leasehold costs | 12,953 |  |  | 13,022 |  |  | 7,603 |
Exploratory drilling and completion costs | 6,966 |  |  | — |  |  | — |
Development drilling and completion costs | 569,141 |  |  | 436,074 |  |  | 493,625 |
Other development costs | 39,168 |  |  | 34,572 |  |  | 2,490 |
Change to asset retirement obligations | 5,608 |  |  | (47) |  |  | 12,549 |
Total capital expenditures | $ | 691,488 |  |  | $ | 491,570 |  |  | $ | 2,608,018 |

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- Definition The entire disclosure for oil and gas producing industries. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -URI http://asc.fasb.org/topic&trid=2145477 + Details
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