Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Operating Loss Carryforwards [Line Items]
Results of Operations, Impairment of Oil and Gas Properties	$ 32	$ 28,979	$ 881,106	$ 36,854
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	$ 500,000		$ 500,000
Effective Income Tax Rate, Continuing Operations	(1.90%)	24.80%	0.50%	22.30%
Delaware Basin Assets [Member]
Operating Loss Carryforwards [Line Items]
Results of Operations, Impairment of Oil and Gas Properties	$ 881,100

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 25
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-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=117330534&loc=d3e28680-109314

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant