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Supplemental Oil and Gas Disclosures

12 Months Ended

Dec. 31, 2017

Oil and Gas Exploration and Production Industries Disclosures [Abstract]

Supplemental Oil and Gas Disclosures

Supplemental Oil and Gas Disclosures

The supplemental data presented below reflects information for all of the Company’s oil and natural gas producing activities.

Capitalized Costs

The following table sets forth the capitalized costs related to the Company’s oil and natural gas producing activities:

	At December 31,
	2017				2016
	(In thousands)
Proved oil and gas properties(1)	$	7,058,782			$	6,476,833
Less: Accumulated depreciation, depletion, amortization and impairment	(2,395,153		)		(1,886,732		)
Proved oil and gas properties, net	4,663,629				4,590,101
Unproved oil and gas properties	780,173				819,735
Total oil and gas properties, net	$	5,443,802			$	5,409,836

__________________ 

(1) Included in the Company’s proved oil and gas properties are estimates of future asset retirement costs of $39.9 million and $42.9 million at December 31, 2017 and 2016, respectively.

Costs Incurred in Oil and Natural Gas Property Acquisition, Exploration and Development Activities

The following table sets forth costs incurred related to the Company’s oil and natural gas activities for the periods presented:

	Year Ended December 31,
	2017				2016				2015
	(In thousands)
Acquisition costs:
Proved oil and gas properties	$	61,874			$	781,522			$	28,737
Unproved oil and gas properties	5,424				672				3,226
Exploration costs	11,600				1,792				2,369
Development costs	511,905				207,766				433,735
Asset retirement costs	(2,965		)		26,795				1,474
Total costs incurred	$	587,838			$	1,018,547			$	469,541

Results of Operations for Oil and Natural Gas Producing Activities

The following table sets forth the results of operations for oil and natural gas producing activities, which exclude straight-line depreciation, general and administrative expenses and interest expense, for the periods presented:

	Year Ended December 31,
	2017				2016				2015
	(In thousands)
Revenues	$	1,034,892			$	625,233			$	721,672
Production costs	321,007				222,117				245,675
Depreciation, depletion and amortization	515,600				462,320				472,800
Exploration costs	11,600				1,785				2,369
Rig termination	—				—				3,895
Impairment	6,887				2,252				46,109
Income tax expense (benefit)	67,244				(23,665		)		(18,382		)
Results of operations for oil and natural gas producing activities	$	112,554			$	(39,576	)		$	(30,794	)

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- References

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- Definition

The entire disclosure for properties used in normal conduct of oil and gas exploration and producing operations. This disclosure may include property accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 360
-URI http://asc.fasb.org/subtopic&trid=2145654

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