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Properties and Equipment, Net | 3 Months Ended
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Mar. 31, 2021
Property, Plant and Equipment [Abstract] |
Properties and Equipment, Net | Properties and Equipment, Net Properties and equipment, net are comprised of the following:
(In thousands) |  | March 31, 2021 |  | December 31, 2020
Proved oil and gas properties |  | $ | 7,196,548 |  |  | $ | 7,068,605 |
Unproved oil and gas properties |  | 43,060 |  |  | 49,829 |
Land, buildings and other equipment |  | 92,858 |  |  | 92,566 |
|  | 7,332,466 |  |  | 7,211,000 |
Accumulated depreciation, depletion and amortization |  | (3,257,038) |  |  | (3,166,394) |
|  | $ | 4,075,428 |  |  | $ | 4,044,606 |
At March 31, 2021, the Company did not have any projects that had exploratory well costs capitalized for a period of greater than one year after drilling.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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