Debt covenant current ratio.

No definition available.

Name:	talo_DebtCovenantCurrentRatio
Namespace Prefix:	talo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt covenant to earnings before interest taxes depreciation and amortization ratio.

+ References

No definition available.

+ Details

Name:	talo_DebtCovenantToEarningsBeforeInterestTaxesDepreciationAndAmortizationRatio
Namespace Prefix:	talo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument additional principal amount issued.

+ References

No definition available.

+ Details

Name:	talo_DebtInstrumentAdditionalPrincipalAmountIssued
Namespace Prefix:	talo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt instrument maximum borrowings.

+ References

No definition available.

+ Details

Name:	talo_DebtInstrumentMaximumBorrowings
Namespace Prefix:	talo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt instrument, springing maturity date.

+ References

No definition available.

+ Details

Name:	talo_DebtInstrumentSpringingMaturityDate
Namespace Prefix:	talo_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument springing maturity period.

+ References

No definition available.

+ Details

Name:	talo_DebtInstrumentSpringingMaturityPeriod
Namespace Prefix:	talo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility lender approval for access capacity amount.

+ References

No definition available.

+ Details

Name:	talo_LineOfCreditFacilityLenderApprovalForAccessCapacityAmount
Namespace Prefix:	talo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of credit reduction to borrowing base.

+ References

No definition available.

+ Details

Name:	talo_LineOfCreditReductionToBorrowingBase
Namespace Prefix:	talo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum percentage of principal amount option to redeem.

+ References

No definition available.

+ Details

Name:	talo_MaximumPercentageOfPrincipalAmountOptionToRedeem
Namespace Prefix:	talo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586

+ Details

Name:	us-gaap_DebtConversionConvertedInstrumentSharesIssued1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: 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(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DebtInstrumentDateOfFirstRequiredPayment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

+ Details

Name:	us-gaap_DebtInstrumentFrequencyOfPeriodicPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

+ References

+ Details

Name:	us-gaap_DebtInstrumentPaymentTerms
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of debt redemption features under terms of the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentRedemptionDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRepurchaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12355-112629

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12317-112629

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ 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(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the terms of a credit facility arrangement. Terms typically include interest rate, collateral required, guarantees required, repayment requirements, and restrictions on use of assets and activities of the entity.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

Name:	us-gaap_RepaymentsOfLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=talo_SevenPointFiveZeroPercentSeniorNotesDueMayTwoThousandTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=talo_BankCreditFacilityMaturesMayTwoThousandTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis=talo_CastexEnergyTwoThousandFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis=talo_ILXAndCastexMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=talo_TwelvePercentSecondPrioritySeniorSecuredNotesDueJanuaryTwoThousandTwentySixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=talo_ElevenPercentSecondPriorityNotesDueAprilTwoThousandTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_OtherNonoperatingIncomeExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Additional information (Details) - USD ($) shares in Millions								1 Months Ended	12 Months Ended
	Jan. 16, 2023	Jan. 15, 2023	May 10, 2021	Jan. 14, 2021	Jan. 14, 2021	Jan. 04, 2021	Jun. 15, 2020	Jan. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 13, 2021	Dec. 07, 2020	Jun. 19, 2020	Feb. 28, 2020	Feb. 27, 2020	Dec. 31, 2018	May 10, 2018	Nov. 21, 2017
Debt Instrument [Line Items]
Debt instrument redemption, description									The indenture governing the 11.00% Notes applies certain limitations on the Company’s ability and the ability of its subsidiaries to, among other things, (i) incur additional indebtedness or issue certain preferred shares; (ii) pay dividends and make certain other restricted payments; (iii) create restrictions on the payment of dividends or other distributions to the Company from its restricted subsidiaries; (iv) create liens on certain assets to secure debt; (v) make certain investments; (vi) engage in sales of assets and subsidiary stock; (vii) transfer all or substantially all of its assets or enter into merger or consolidation transactions; and (viii) engage in transactions with affiliates. The 11.00% Notes contain customary quarterly and annual reporting, financial and administrative covenants. The Company was in compliance with all debt covenants at December 31, 2020. On June 15, 2020, the Company entered into an exchange agreement pursuant to which the Company agreed to exchange $37.2 million aggregate principal amount of the 11.00% Notes from certain holders in exchange for 3.1 million shares of the Company’s common stock plus cash in an amount equal to accrued interest up to the June 18, 2020 settlement date. Additionally, during the year ended December 31, 2020, the Company repurchased $6.4 million of the 11.00% Notes. The exchange agreement and debt repurchases resulted in a gain on extinguishment of debt for the year ended December 31, 2020 of $1.7 million, which is presented as “Other income (expense)” on the Consolidated Statements of Operations.
Gain on extinguishment of debt									$ 1,662,000
Senior notes, outstanding amount									$ 993,314,000	$ 746,928,000
7.50% Senior Notes – due May 2022
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage									105.63%
Debt instrument maturity date									May 31, 2022	May 31, 2022
Debt instrument frequency of periodic payment									semi-annually
Debt instrument payment terms									semi-annually each May 31 and November 30
Debt instrument, interest rate, stated percentage									7.50%	7.50%
Debt instrument, face amount									$ 6,100,000
7.50% Senior Notes – due May 2022 \| Minimum
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage									100.00%
7.50% Senior Notes – due May 2022 \| Maximum
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage									105.63%
Bank Credit Facility – matures May 2022
Debt Instrument [Line Items]
Debt instrument maturity date									May 10, 2022
Debt instrument, face amount									$ 25,000,000.0
Credit facility, maximum borrowing capacity									$ 985,000,000.0
Debt instrument, springing maturity date									Dec. 04, 2021
Bank credit facility, description									The Bank Credit Facility matures on May 10, 2022, provided that the Bank Credit Facility mandates a springing maturity that is 120 days prior to the maturity date of the 11.00% Notes (such 120 days prior being December 4, 2021), if greater than $25.0 million of the 11.00% Notes or any permitted refinancing indebtedness in respect thereof is outstanding on such date.
Debt instrument springing maturity period									120 days
Commitment fee percentage									0.50%
Line of credit outstanding borrowing amount									$ 640,000,000.0
Letters of credit outstanding amount									13,600,000
Bank Credit Facility – matures May 2022 \| Castex 2005 Acquisition
Debt Instrument [Line Items]
Line of credit facility lender approval for access capacity amount													$ 25,000,000.0
Bank Credit Facility – matures May 2022 \| ILX and Castex
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity												$ 985,000,000.0	$ 985,000,000.0	$ 1,150,000,000	$ 950,000,000.0
Bank Credit Facility – matures May 2022 \| Subsequent Event
Debt Instrument [Line Items]
Debt instrument, face amount				$ 25,000,000.0	$ 25,000,000.0
Credit facility, maximum borrowing capacity				$ 960,000,000.0	960,000,000.0			$ 960,000,000.0
Debt instrument springing maturity period				120 days
Line of credit outstanding borrowing amount								465,000,000.0
Letters of credit outstanding amount								13,600,000
Repayment of outstanding borrowings								175,000,000.0
Line of credit reduction to borrowing base								$ 25,000,000.0
Bank Credit Facility – matures May 2022 \| Letter of Credit
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity									$ 200,000,000.0
Bank Credit Facility – matures May 2022 \| Minimum
Debt Instrument [Line Items]
Debt covenant current ratio									100.00%
Bank Credit Facility – matures May 2022 \| Minimum \| London Interbank Offered Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate									3.00%
Bank Credit Facility – matures May 2022 \| Minimum \| Base Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate									2.00%
Bank Credit Facility – matures May 2022 \| Maximum
Debt Instrument [Line Items]
Debt covenant to EBITDAX									300.00%
Bank Credit Facility – matures May 2022 \| Maximum \| London Interbank Offered Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate									4.00%
Bank Credit Facility – matures May 2022 \| Maximum \| Base Rate
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate									3.00%
12.00% Second-Priority Senior Notes - due January 2026 \| Subsequent Event
Debt Instrument [Line Items]
Debt instrument maximum borrowings				$ 550,000,000.0	$ 550,000,000.0
Senior Notes \| 11.00% Second-Priority Senior Secured Notes - due April 2022
Debt Instrument [Line Items]
Debt instrument maturity date									Apr. 03, 2022
Debt instrument frequency of periodic payment									semi-annually
Debt instrument payment terms									semi-annually each April 15 and October 15
Debt instrument, interest rate, stated percentage							11.00%		11.00%									11.00%
Debt instrument, repurchase amount							$ 37,200,000		$ 6,400,000
Debt instrument, shares issued in conversion for repurchased and retired notes							3.1
Senior Notes \| 11.00% Second-Priority Senior Secured Notes - due April 2022 \| Subsequent Event
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage											11.00%
Senior notes, outstanding amount											$ 347,300,000
Senior Notes \| 11.00% Second-Priority Senior Secured Notes - due April 2022 \| Other Income (Expense)
Debt Instrument [Line Items]
Gain on extinguishment of debt									$ 1,700,000
Senior Notes \| 11.00% Second-Priority Senior Secured Notes - due April 2022 \| Forecast
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage			102.75%
Senior Notes \| 11.00% Second-Priority Senior Secured Notes - due April 2022 \| Minimum
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage									100.00%
Senior Notes \| 11.00% Second-Priority Senior Secured Notes - due April 2022 \| Maximum
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage									102.75%
Senior Notes \| 7.50% Senior Notes – due May 2022
Debt Instrument [Line Items]
Debt instrument maturity date									May 31, 2022
Debt instrument, interest rate, stated percentage									7.50%							7.50%		7.50%
Debt instrument, face amount																	$ 81,500,000
Senior notes, outstanding amount									$ 6,060,000	$ 6,060,000							$ 6,100,000
Senior Notes \| 12.00% Second-Priority Senior Notes - due January 2026 \| Subsequent Event
Debt Instrument [Line Items]
Debt instrument maturity date						Jan. 31, 2026
Debt instrument frequency of periodic payment						semi-annually
Debt instrument payment terms						semi-annually each January 15 and July 15
Debt instrument, interest rate, stated percentage				12.00%	12.00%	12.00%
Debt instrument, face amount						$ 500,000,000.0
Debt Instrument, interest payable commencing date						Jul. 15, 2021
Debt instrument additional principal amount issued				$ 150,000,000.0	$ 150,000,000.0
Gross proceeds from Issuance of Debt					$ 600,500,000
Senior Notes \| 12.00% Second-Priority Senior Notes - due January 2026 \| Forecast
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage		112.00%
Maximum percentage of principal amount option to redeem		40.00%
Senior Notes \| 12.00% Second-Priority Senior Notes - due January 2026 \| Minimum \| Forecast
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	100.00%
Senior Notes \| 12.00% Second-Priority Senior Notes - due January 2026 \| Maximum \| Forecast
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	106.00%