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Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment consists of the following (in thousands): 

			December 31,
			2018						2017
Oil and natural gas properties
Proved			$	1,269,091					$	1,056,806
Unproved			60,152						100,884
Total oil and natural gas properties			1,329,243						1,157,690
Less accumulated depreciation, depletion and impairment			(580,132)						(460,431)
Net oil and natural gas properties capitalized costs			749,111						697,259
Land			4,400						4,500
Electrical infrastructure			131,176						131,010
Non-oil and natural gas equipment			13,458						26,809
Buildings and structures			77,148						79,548
Total			226,182						241,867
Less accumulated depreciation and amortization			(25,344)						(15,886)
Other property, plant and equipment, net			200,838						225,981
Total property, plant and equipment, net			$	949,949					$	923,240

Capitalized Costs of Unproved Properties Excluded from Amortization

The following table summarizes the costs, by year incurred, related to unproved properties, which were excluded from oil and natural gas properties subject to amortization at December 31, 2018 (in thousands):

									Year Cost Incurred
			Total						2018						2017						2016						2015 and Prior
Property acquisition			$	59,522					$	3,859					$	20,647					$	13,735					$	21,281
Exploration			630						13						323						243						51
Total costs incurred			$	60,152					$	3,872					$	20,970					$	13,978					$	21,332

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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=6877327&loc=d3e13212-122682

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-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

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- Definition

Tabular disclosure of the capitalized costs of unproved properties and major development projects that are excluded from capitalized costs being amortized. This includes the total costs excluded and, at a minimum, these categories of costs: acquisition costs, exploration costs, development costs in the case of significant development projects, and capitalized interest.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(a)(32))
-URI http://asc.fasb.org/extlink&oid=82851474&loc=d3e511914-122862

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(c)(7)(ii))
-URI http://asc.fasb.org/extlink&oid=82851474&loc=d3e511914-122862

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