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Property, Plant and Equipment | 3 Months Ended
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Mar. 31, 2019
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Property, Plant and Equipment Property, plant and equipment consists of the following (in thousands):
| March 31, 2019 |  | December 31, 2018
Oil and natural gas properties |  |  |
Proved | $ | 1,344,552 |  | $ | 1,269,091
Unproved | 57,363 |  | 60,152
Total oil and natural gas properties | 1,401,915 |  | 1,329,243
Less accumulated depreciation, depletion and impairment | (614,972) |  | (580,132)
Net oil and natural gas properties capitalized costs | 786,943 |  | 749,111
Land | 4,400 |  | 4,400
Electrical infrastructure | 131,176 |  | 131,176
Other non-oil and natural gas equipment | 13,410 |  | 13,458
Buildings and structures | 77,148 |  | 77,148
Financing leases | 1,727 |  | —
Total | 227,861 |  | 226,182
Less accumulated depreciation and amortization | (27,847) |  | (25,344)
Other property, plant and equipment, net | 200,014 |  | 200,838
Total property, plant and equipment, net | $ | 986,957 |  | $ | 949,949
During the first quarter of 2018, the Company classified its remaining midstream generator assets as held for sale. These assets had a carrying value of $5.7 million which exceeded the estimated net realizable value of $1.6 million based on expected sales prices obtained from third parties. As a result, the Company recorded an impairment of $4.1 million for the three-month period ended March 31, 2018. The midstream generator assets were sold during the second quarter of 2018 with no gain or loss recognized on the sale. No significant assets were classified as held for sale at March 31, 2019 or December 31, 2018.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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