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Supplemental Disclosures to the Balance Sheets and Statements of Cash Flows - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	2 Months Ended	10 Months Ended	12 Months Ended
	Feb. 28, 2017	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Supplemental Disclosures of Significant Non-Cash Investing Activities:
Material inventory transfers to oil and natural gas properties	$ 0	$ 0	$ 10,056	$ 2,371
Supplemental Disclosures of Cash Payments (Receipts):
Interest, net of amounts capitalized	8,057	14,276	30,720	19,761
Income taxes	0	1,994	(2)	(1,901)
Reorganization items, net	$ 11,838	$ 1,732	$ 0	$ 832

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Noncash Transfer Of Inventory To Oil And Gas Property

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- Definition

Reorganization Items Payment (Receipt)

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
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-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585

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-Publisher FASB
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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
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-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585

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