XML 21 R12.htm IDEA: XBRL DOCUMENT
v3.21.2

Pro Forma Adjustments and Assumptions - Additional Information (Details) $ in Thousands |  |  |  | 1 Months Ended | 9 Months Ended | 11 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 21, 2021 USD ($) | May 03, 2021 USD ($) | Nov. 19, 2020 USD ($) | Dec. 31, 2020 USD ($) $ / bbl | Sep. 30, 2021 USD ($) $ / bbl | Nov. 19, 2020 USD ($) | Dec. 31, 2020 USD ($) $ / bbl | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2021 USD ($)
Pro Forma Adjustments And Assumptions [Line Items] |  |  |  |  |  |  |  |  |  |
Total cash paid | $ 511,296 | $ 585,802 |  |  |  |  |  |  |  |
Transaction costs |  | 4,123 |  |  |  |  |  |  |  |
Accrued liabilities, estimated MVC |  | 5,508 |  |  |  |  |  |  |  |
General and administrative expenses |  |  |  | $ 14,224 | $ 60,461 | $ 145,294 |  | $ 143,506 | $ 121,346 |
Depletion rate (in dollars per Boe) | $ / bbl |  |  |  | 8.47 | 8.47 |  | 8.47 |  |  |
Other property, plant, and equipment expense, other |  |  |  |  | $ 300 |  | $ 300 |  |  |
Asset retirement obligation, accretion expense |  |  |  |  | 600 |  | 800 |  |  |
Increase (decrease) in general and administrative expenses |  | (1,800) |  |  |  |  |  |  |  |
Fresh start adjustment, net loss attributable to non controlling interests |  |  |  |  |  |  | 86,800 |  |  |
Reorganization adjustment, net income attributable to non controlling interests |  |  |  |  |  |  | 9,100 |  |  |
Unamortized prepaid cash incentive |  |  |  |  |  | 4,200 |  |  |  |
Gain (loss) on debt discharge |  |  | $ 964,569 |  |  | 28,014 |  |  |  |
Gain (loss) on revaluation adjustments |  |  |  |  |  | 92,901 |  |  |  |
Loss on revaluation adjustments |  |  | (225,336) |  |  |  |  |  |  |
Write-off of unamortized debt discount |  |  | (38,373) |  |  |  |  |  |  |
Professional fees |  |  | (16,352) |  |  |  |  |  |  |
Write-off of unamortized deferred financing costs |  |  | (12,739) |  |  |  |  |  |  |
Debtor-in-possession credit facility fees |  |  | (5,853) |  |  |  |  |  |  |
Total reorganization items, net |  |  | $ 665,916 |  |  | 120,915 |  |  |  |
Reorganization adjustment, income tax expense |  |  |  |  |  | 9,700 |  |  |  |
Fresh start adjustment, income tax benefit |  |  |  |  |  | 6,400 |  |  |  |
General and Administrative Expense |  |  |  |  |  |  |  |  |  |
Pro Forma Adjustments And Assumptions [Line Items] |  |  |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  | 1,800 |  |  |  |  |
Restricted Stock |  |  |  |  |  |  |  |  |  |
Pro Forma Adjustments And Assumptions [Line Items] |  |  |  |  |  |  |  |  |  |
Share-based compensation, immediate vesting, amount |  |  |  |  |  | 6,700 |  |  |  |
Performance Shares |  |  |  |  |  |  |  |  |  |
Pro Forma Adjustments And Assumptions [Line Items] |  |  |  |  |  |  |  |  |  |
Share-based compensation, immediate vesting, amount |  |  |  |  |  | 4,700 |  |  |  |
Phantom Share Units (PSUs) |  |  |  |  |  |  |  |  |  |
Pro Forma Adjustments And Assumptions [Line Items] |  |  |  |  |  |  |  |  |  |
Share-based compensation, immediate vesting, amount |  |  |  |  |  | $ 1,000 |  |  |  |
Oasis Senior Notes | Unsecured Debt |  |  |  |  |  |  |  |  |  |
Pro Forma Adjustments And Assumptions [Line Items] |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  | 11,100 |  | 25,500 |  |  |
Deferred financing cost |  |  |  | $ 1,600 | 700 |  | 1,600 |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Permian Basin Sale |  |  |  |  |  |  |  |  |  |
Pro Forma Adjustments And Assumptions [Line Items] |  |  |  |  |  |  |  |  |  |
Gain on sale of properties |  |  |  |  | 227,400 |  |  |  |  |
Forecast |  |  |  |  |  |  |  |  |  |
Pro Forma Adjustments And Assumptions [Line Items] |  |  |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  |  |  |  |  | $ 2,300
2021 Williston Acquisition |  |  |  |  |  |  |  |  |  |
Pro Forma Adjustments And Assumptions [Line Items] |  |  |  |  |  |  |  |  |  |
Total cash paid | $ 511,300 | $ 74,506 |  |  |  |  |  |  |  |
2021 Williston Acquisition | Additional Employees |  |  |  |  |  |  |  |  |  |
Pro Forma Adjustments And Assumptions [Line Items] |  |  |  |  |  |  |  |  |  |
General and administrative expenses |  |  |  |  | $ 2,800 |  | $ 3,700 |  |  |

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Liabilities + References No definition available. + Details
Name: | oas_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedLiabilities
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Depletion Of Oill and Gas Properties, Rate + References No definition available. + Details
Name: | oas_DepletionOfOillAndGasPropertiesRate
Namespace Prefix: | oas_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Depreciation, Property, Plant and Equipment, Other + References No definition available. + Details
Name: | oas_DepreciationPropertyPlantAndEquipmentOther
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fresh Start Adjustment, Gain (Loss) on Revaluation Adjustments + References No definition available. + Details
Name: | oas_FreshStartAdjustmentGainLossOnRevaluationAdjustments
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fresh Start Adjustment, Galin (Loss) on Revaluation Adjustments + References No definition available. + Details
Name: | oas_FreshStartAdjustmentGalinLossOnRevaluationAdjustments
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fresh Start Adjustment, Income Tax Expense (Benefit) + References No definition available. + Details
Name: | oas_FreshStartAdjustmentIncomeTaxExpenseBenefit
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fresh Start Adjustments, Net Income (Loss) Attributable To Noncontrolling Interest + References No definition available. + Details
Name: | oas_FreshStartAdjustmentsNetIncomeLossAttributableToNoncontrollingInterest
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase (Decrease) In General And Administrative Expenses + References No definition available. + Details
Name: | oas_IncreaseDecreaseInGeneralAndAdministrativeExpenses
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Pro Forma Adjustments And Assumptions [Line Items] + References No definition available. + Details
Name: | oas_ProFormaAdjustmentsAndAssumptionsLineItems
Namespace Prefix: | oas_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reorganization Adjustment, Income Tax Expense (Benefit) + References No definition available. + Details
Name: | oas_ReorganizationAdjustmentIncomeTaxExpenseBenefit
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reorganization Adjustments, Net Income (Loss) Attributable To Noncontrolling Interest + References No definition available. + Details
Name: | oas_ReorganizationAdjustmentsNetIncomeLossAttributableToNoncontrollingInterest
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reorganization Value, DIP Credit Facility Fees + References No definition available. + Details
Name: | oas_ReorganizationValueDIPCreditFacilityFees
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reorganization Value, Gain (Loss) on Debt Discharge + References No definition available. + Details
Name: | oas_ReorganizationValueGainLossOnDebtDischarge
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reorganization Value, Write-off Of Unamortized Debt Discount + References No definition available. + Details
Name: | oas_ReorganizationValueWriteOffOfUnamortizedDebtDiscount
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reorganization Value, Write-off Of Unamortized Deferred Financing Costs + References No definition available. + Details
Name: | oas_ReorganizationValueWriteOffOfUnamortizedDeferredFinancingCosts
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Prepaid Cash Incentive + References No definition available. + Details
Name: | oas_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPrepaidCashIncentive
Namespace Prefix: | oas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848 + Details
Name: | us-gaap_AssetRetirementObligationAccretionExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=124437977&loc=d3e55730-112764 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56145-112766 + Details
Name: | us-gaap_DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + 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 210.5-02.17) -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 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684 + Details
Name: | us-gaap_GainLossOnSaleOfBusiness
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
Name: | us-gaap_GeneralAndAdministrativeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69F -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495745-112612 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69E -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495743-112612 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1F -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611 + Details
Name: | us-gaap_InterestExpenseDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total amount of reorganization items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56145-112766 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=124437977&loc=d3e55730-112764 + Details
Name: | us-gaap_ReorganizationItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_PhantomShareUnitsPSUsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=oas_OasisSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=oas_PermianBasinSaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=oas_A2021WillistonAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NatureOfExpenseAxis=oas_AdditionalEmployeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |