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Property, Plant and Equipment (Tables) | 9 Months Ended
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Sep. 30, 2016
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Property, plant and equipment consists of the following (in thousands):
| September 30, 2016 |  | December 31, 2015
Oil and natural gas properties |  |  |
Proved(1) | $ | 12,093,492 |  |  | $ | 12,529,681 |
Unproved | 322,580 |  |  | 363,149 |
Total oil and natural gas properties | 12,416,072 |  |  | 12,892,830 |
Less accumulated depreciation, depletion and impairment | (11,637,538 | ) |  | (11,149,888 | )
Net oil and natural gas properties capitalized costs | 778,534 |  |  | 1,742,942 |
Land | 5,210 |  |  | 14,260 |
Non-oil and natural gas equipment(2) | 240,402 |  |  | 373,687 |
Buildings and structures(3) | 228,753 |  |  | 227,673 |
Total | 474,365 |  |  | 615,620 |
Less accumulated depreciation and amortization | (116,837 | ) |  | (123,860 | )
Other property, plant and equipment, net | 357,528 |  |  | 491,760 |
Total property, plant and equipment, net | $ | 1,136,062 |  |  | $ | 2,234,702 |
____________________
(1) | Includes cumulative capitalized interest of approximately $51.1 million and $48.9 million at September 30, 2016 and December 31, 2015, respectively.
(2) | Includes cumulative capitalized interest of approximately $4.3 million at both September 30, 2016 and December 31, 2015.
(3) | Includes cumulative capitalized interest of approximately $20.4 million at both September 30, 2016 and December 31, 2015

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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://www.xbrl.org/2003/role/presentationRef -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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 + Details
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