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Property, Plant and Equipment (Tables) | 12 Months Ended
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Dec. 31, 2021
Property, Plant and Equipment [Abstract] |
Schedule of Other Property, Plant and Equipment | The following table summarizes our oil and natural gas properties as of December 31, 2021 and 2020:
| As of December 31,
| 2021 |  | 2020
| (in thousands)
Proved oil and natural gas properties (successful efforts method) | $ | 6,043,602 |  |  | $ | 4,910,059 |
Unproved oil and natural gas properties | 308,721 |  |  | 288,459 |
Oil and natural gas properties, at cost | 6,352,323 |  |  | 5,198,518 |
Less accumulated depreciation, depletion, amortization and impairment | (1,881,934) |  |  | (1,633,664) |
Oil and natural gas properties, net | $ | 4,470,389 |  |  | $ | 3,564,854 |
Other Property The following table summarizes other property, plant and equipment as of December 31, 2021 and 2020:
| Estimated useful life |  | As of December 31,
|  | 2021 |  | 2020
| (years) |  | (in thousands)
Gathering and pipeline system | 30 |  | $ | 106,023 |  |  | $ | 108,777 |
Vehicles | 3-5 |  | 10,836 |  |  | 7,273 |
Computers, furniture, and equipment | 3-10 |  | 7,175 |  |  | 6,812 |
Buildings and improvements | 5-30 |  | 6,641 |  |  | 6,797 |
Land |  |  | 5,467 |  |  | 5,700 |
Financing right of use asset |  |  | 5,249 |  |  | — |
Field inventory |  |  | 2,927 |  |  | 3,012 |
Total field and other property and equipment, at cost |  |  | 144,318 |  |  | 138,371 |
Less: accumulated depreciation, amortization and impairment |  |  | (59,594) |  |  | (61,078) |
Total field and other property and equipment, net |  |  | $ | 84,724 |  |  | $ | 77,293 |
Schedule of Capitalized Exploratory Well Costs | Capitalized exploratory well costs are included in unproved oil and natural gas properties. The following table reflects the net changes in capitalized exploratory well costs for the years ended December 31, 2021 and 2020:
| As of December 31,
| 2021 |  | 2020
| (in thousands)
Balance at beginning of period | $ | — |  |  | $ | — |
Additions pending the determination of proved reserves | — |  |  | — |
Reclassifications to proved properties | — |  |  | — |
Cost charged to expense | — |  |  | — |
Balance at end of period | $ | — |  |  | $ | — |

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- Definition Tabular disclosure of the change in capitalized exploratory costs during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123377692&loc=SL6806780-109447 + Details
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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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