Document And Entity Information
Adjusted Above Margin [Member]
Adjusted above Margin
Dilutive warrants and unvested stock options (in shares)
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements and warrants using the treasury stock method.
Statistical Measurement [Axis]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
Note To Financial Statement Details Textual
Significant Accounting Policies
Provision for income taxes
Income Tax Expense (Benefit)
Total provision for income taxes
Note 2 - Basis of Presentation and Summary of Significant Accounting Policies
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note 4 - Fair Value Measurements
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note 5 - Derivative Financial Instruments
Adjusted SOFR [Member]
An interest rate that is equal to the sum of the SOFR.
Trading Arrangements, by Individual [Table]
Note 6 - Exploratory Extension Well Costs
hpk_DebtInstrumentDiscountPercentage
Debt Instrument Discount Percentage
Debt instrument, discount percentage.
Material Terms of Trading Arrangement [Text Block]
Note 7 - Long-term Debt
Note 8 - Asset Retirement Obligations
hpk_StockIssuedDuringPeriodSharesWarrantExercises
Stock Issued During Period, Shares, Warrant Exercises
The number of shares issued during the period for warrant exercises.
Note 9 - Incentive Plans
Note 10 - Commitments and Contingencies
Note 13 - Income Taxes
Minimum [Member]
Note 14 - (Losses) Earnings Per Share
hpk_DebtInstrumentCovenantPriorityFacilityLimit
Debt Instrument, Covenant, Priority Facility Limit
The amount of priority facility limit under the covenant of the debt instrument.
Note 16 - Subsequent Events
Statistical Measurement [Domain]
Note 2 - Basis of Presentation and Summary of Significant Accounting Policies - Other Property and Equipment, Net (Details)
Maximum [Member]
Note 2 - Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Reportable Segments (Details)
Note 4 - Fair Value Measurements - Assets and Liabilities Measured On Recurring Basis (Details)
Additions to asset retirement obligations
Retirement Plan Name [Domain]
Note 5 - Derivative Financial Instruments - Summary of the Effect of Derivatives on the Condensed Consolidated Statements of Operations (Details)
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
Note 5 - Derivative Financial Instruments - Price Risk Derivative Contracts (Details)
Accounts payable, accrued liabilities and other current liabilities
us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Retirement Plan Name [Axis]
Note 5 - Derivative Financial Instruments - Net Derivative Liabilities By Counterparty (Details)
Note 6 - Exploratory Extension Well Costs - Exploratory Well Costs (Details)
Note 7 - Long-term Debt - Long-term Debt (Details)
Note 8 - Asset Retirement Obligations - Asset Retirement Obligations Activity (Details)
Note 9 - Incentive Plans - Number of Shares Available for Grant Pursuant to Long-term Incentive Plan (Details)
Note 9 - Incentive Plans - Stock Options Activity (Details)
Note 10 - Commitments and Contingencies - Operating Lease Obligations (Details)
Accrued capital expenditures
Carrying value as of the balance sheet date of obligations incurred through that date and payable for capital expenditures. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
Basis of Presentation and Significant Accounting Policies [Text Block]
Note 13 - Income Taxes - Income Tax Benefit and Effective Tax Rate (Details)
Business Description and Basis of Presentation [Text Block]
Note 13 - Income Taxes - Effective Income Tax Rate Reconciliation (Details)
Note 13 - Income Taxes - Schedule of Income Taxes Paid (Details)
Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details)
Note 14 - (Losses) Earnings Per Share - Basic and Diluted Net Income (Loss) Per Share Attributable to Common Stockholders (Details)
Note 16 - Subsequent Events - Schedule of Natural Gas Derivative Instruments (Details)
Notes To Financial Statements
Crude Oil Sales [Member]
Represents information regarding crude oil sales.
hpk_NetCashReceiptsFromPaymentsOnDerivatives
Cash paid on settlement of derivative instruments
The amount of net cash receipts from payments on derivatives.
us-gaap_CapitalizedExploratoryWellCosts
Beginning capitalized exploratory/extension well costs
Ending capitalized exploratory/extension well costs
Notes To Financial Statements [Abstract]
Counterparty Name [Axis]
us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Changes in valuation allowances
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Income tax expense
Forfeitures, average exercise price (in dollars per share)
us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Income tax expense at U.S. federal statutory rate
Natural Gas and NGL Sales [Member]
Represents information regarding natural gas and NGL sales.
us-gaap_Dividends
Dividends
Income Tax Jurisdiction [Domain]
First Term Loan Amendment [Member]
Represents the First Term Loan Amendment.
us-gaap_DividendsCash
Dividends declared
Land [Member]
us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther
Other
us-gaap_CommonStockDividendsPerShareDeclared
Dividends declared per share (in dollars per share)
Former CEO [Member]
Represents the former CEO.
Leasehold Improvements [Member]
us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
State income tax, net of federal income tax effect
Counterparty Name [Domain]
us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Other, net
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits
Tax Credits
Dividends [Axis]
Dividends [Domain]
Adjustments to reconcile net income to net cash provided by operations:
Award Type [Axis]
Segment Reporting [Table Text Block]
Preferred stock, $0.0001 par value, 10,000,000 shares authorized, none issued and outstanding at June 30, 2026 and December 31, 2025
Plan Name [Axis]
Plan Name [Domain]
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders’ equity
Stock-based compensation
Share-Based Payment Arrangement, Expense
Share-Based Payment Arrangement, Expense
Consolidation Items [Axis]
Title and Position [Axis]
Segment Reporting [Table]
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses, inventory and other assets
General and administrative
Stock-based compensation expense
Consolidation Items [Domain]
us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
Participating basic earnings
Share-Based Payment Arrangement [Text Block]
Crude Oil, Natural Gas and Natural Gas Liquids [Member]
Represents information regarding crude oil, natural gas and natural gas liquids.
Changes in operating assets and liabilities:
Preferred Stock, Shares Issued (in shares)
Preferred stock, shares outstanding (in shares)
Accounts Payable and Accrued Liabilities, Policy [Policy Text Block]
Disclosure for accounts payable and accrued liabilities.
Preferred stock, shares authorized (in shares)
Derivative settlements payable
Carrying value as of the balance sheet date obligations incurred through that date and payable for derivative settlements.
Preferred stock, par value (in dollars per share)
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net decrease in cash and cash equivalents
J. Aaron and Company LLC [Member]
Represents J. Aaron and Company
DK Trading and Supply, LLC [Member]
Represents DK Trading and Supply, LLC. ("Delek").
Field Equipment [Member]
Represents information regarding field equipment.
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents, beginning of period
Cash and cash equivalents, end of period
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Statement [Table]
hpk_OilAndNaturalGasMarketingContractsTermOverWhichConsiderationIsReceivedFromPurchaser
Oil and Natural Gas Marketing Contracts, Term Over Which Consideration is Received from Purchaser
Represents the term over which consideration is received from the purchaser under oil and natural gas marketing contracts.
Credit Facility [Axis]
Second Largest Purchaser [Member]
Represents second largest purchaser.
Credit Facility [Domain]
us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Line of Credit Facility, Current Borrowing Capacity
Revolving Credit Facility [Member]
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
Prepaid expenses
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
hpk_DefinedContributionPlanPeriodOfEmploymentForEligibility
Defined Contribution Plan, Period of Employment for Eligibility (Month)
Represents the period of time employees must be continuously employed before they are eligible to participate in the defined contribution plan.
Shares Available Under Long-term Incentive Plan [Table Text Block]
Tabular disclosure of shares available under a long-term incentive plan.
us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent
The 2020 Long-term Incentive Plan [Member]
Represents information related to the 2020 Long-term Incentive Plan.
us-gaap_DerivativeLiabilities
Total liabilities
Oil and Gas, Capitalized Exploratory Well Cost, Roll Forward [Table Text Block]
hpk_CapitalizedExploratoryWellCostsMaximumTerm
Capitalized Exploratory Well Costs, Maximum Term (Year)
Represents the maximum term for which all capitalized exploratory well costs have been capitalized.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)
Product and Service [Domain]
Product and Service [Axis]
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property, Plant, and Equipment, Useful Life
Line of Credit Facility [Table]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total
Crude Oil Derivative Roll Swap [Member]
Represents the Crude Oil Derivative Roll Swap.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Forfeitures, options (in shares)
Forfeitures (in shares)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
2027
hpk_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLimitedTaxBenefitDueToCompensationAmount
Limited tax benefit due to compensation
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to limited tax benefit due to compensation.
Approved and authorized shares (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)
Shares available for future grant (in shares)
hpk_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLimitedTaxBenefitDueToCompensationPercent
Limited tax benefit due to compensation
Percentage o the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to limited tax benefit due to compensation.
Crude oil and natural gas production
Lease operating expenses
Schedule of Change in Asset Retirement Obligation [Table Text Block]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
2026
June 4, 2024 [Member]
Represents June 4, 2024.
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Exploration and abandonment expense
Measurement Frequency [Axis]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Shares subject to awards issued under plan (in shares)
Outstanding (in shares)
Outstanding (in shares)
Exploration and abandonments
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Outstanding, average exercise price (in dollars per share)
Outstanding, average exercise price (in dollars per share)
Commitments and Contingencies Disclosure [Text Block]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
2028
Statement [Line Items]
us-gaap_DeferredTaxAssetInterestCarryforward
Stock-based compensation
Fair Value Hierarchy and NAV [Axis]
Outstanding, intrinsic value
Schedule of Income Taxes Paid [Table Text Block]
The tabular disclosure of income taxes paid.
us-gaap_CommonStockSharesIssued
Common Stock, Shares, Issued (in shares)
Grantee Status [Domain]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
us-gaap_CommonStockSharesOutstanding
Common Stock, Shares, Outstanding (in shares)
Award Type [Domain]
Share-Based Payment Arrangement, Employee [Member]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Common stock, shares authorized (in shares)
Grantee Status [Axis]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
hpk_SeveranceTaxReceivable
Severance Tax Receivable
The amount of severance tax receivable.
us-gaap_DividendsPayableCurrentAndNoncurrent
Dividends Payable
Common stock, $0.0001 par value, 600,000,000 shares authorized, 126,452,804 and 125,330,104 shares issued and outstanding at June 30, 2026 and December 31, 2025, respectively
us-gaap_ExtinguishmentOfDebtAmount
Extinguishment of Debt, Amount
us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
Accounts Payable and Accrued Liabilities, Current
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Accounts payable – trade
Revenues and royalties payable
hpk_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAnnualizedLossLimitationAmount
Annualized loss limitation
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible annualized loss limitation.
hpk_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAnnualizedLossLimitationPercent
Annualized loss limitation
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to annualized loss limitation.
Concentration Risk [Table]
us-gaap_SegmentExpenditureAdditionToLongLivedAssets
Capital costs incurred, including acquisitions
Subsequent Events [Text Block]
Concentration Risk Type [Axis]
Borrowings under Senior Credit Facility Agreement
Concentration Risk Disclosure [Text Block]
Largest Purchaser [Member]
Related to largest purchaser.
Prepaid Expense [Policy Text Block]
Disclosure for the accounting policy for prepaid expense.
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less present value discount
Operating leases
us-gaap_OperatingLeaseLiabilityNoncurrent
Operating Lease, Liability, Noncurrent
Outstanding, remaining term (Year)
Contractual Equity-based Bonus [Member]
Related to contractual equity-based bonus.
Other accrued liabilities
us-gaap_OperatingLeaseLiability
Operating Lease, Liability
Operating leases
us-gaap_OperatingLeaseLiabilityCurrent
Operating Lease, Liability, Current
Senior Unsecured Notes Due 2024 [Member]
Related to senior unsecured notes due 2024.
Current maturities of long-term debt
Less current maturities of long-term debt
Texas Margin Tax [Member]
Relating to Texas margin tax.
Vest, remaining term (Year)
Exercisable remaining term (Year)
hpk_EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefitsAmount
Changes in unrecognized tax benefits
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the unrecognized tax benefits amount.
Concentration Risk Type [Domain]
hpk_EffectiveIncomeTaxRateReconciliationChangesInUnrecognizedTaxBenefitsPercent
Changes in unrecognized tax benefits
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in unrecognized tax benefits, percent.
Proceeds from sales of properties
Proceeds from Sale of Oil and Gas Property and Equipment
Long-term debt, net
Long-term debt, net
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]
Income Tax Jurisdiction, Domestic Federal [Member]
Income Tax Jurisdiction, Domestic State and Local [Member]
us-gaap_LongTermDebt
Total debt
Long-Term Debt
Statement of Stockholders' Equity [Abstract]
Loss Contingencies [Table]
Statement of Cash Flows [Abstract]
Stockholders’ equity:
hpk_StockIssuedDuringPeriodValueExerciseOfWarrants
Exercise of warrants
Value of stock issued for exercise of warrants.
Equity Components [Axis]
hpk_StockIssuedDuringPeriodSharesExerciseOfWarrants
Exercise of warrants (in shares)
Shares of stock issued for exercise of warrants.
Advances from joint interest owners
Amount of advances from joint interest owners for costs incurred on joint interest wells.
hpk_DividendEquivalentsCash
Dividend Equivalents, Cash
Dividend equivalents declared on outstanding stock options
Amount of paid and unpaid cash dividends equivalents declared for classes of stock, for example, but not limited to, common and preferred.
Share-Based Payment Arrangement [Policy Text Block]
hpk_DividendEquivalentsPerShareDeclared
Dividend Equivalents, Per Share, Declared (in dollars per share)
Aggregate dividend equivalents declared during the period for each share of stock outstanding.
Equity Component [Domain]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 3 [Member]
Fair Value, Inputs, Level 1 [Member]
Equity [Text Block]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Fifth Third Bank, National Association [Member]
Information pertaining Fifth Third Bank, National Association.
Other property and equipment, net
Other property and equipment, net
us-gaap_PrepaidExpenseCurrentAndNoncurrent
Prepaid Expense
Proved properties
hpk_DebtInstrumentCovenantMaximumTotalDebtToEbitdaxRatio
Debt Instrument, Covenant, Maximum Total Debt to EBITDAX Ratio
The maximum total debt to EBITDAX ratio required by the debt agreement.
Subsequent Event [Table]
hpk_SupplyCommitmentMinimumVolumeCommitment
Supply Commitment, Minimum Volume Commitment
Represents the minimum volume commitment on a supply commitment.
Property, Plant, and Equipment [Policy Text Block]
The 401K Plan [Member]
Information pertaining to the 401K plan.
Furniture and Fixtures [Member]
us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Compensation costs included in net income
Production and ad valorem taxes
Production and ad valorem taxes
Senior Unsecured Notes and Revolving Credit Facility [Member]
Related to senior unsecured notes and revolving credit facility.
hpk_PaymentsOfDividendsEquivalents
Dividend equivalents paid
Cash outflow in the form of dividends equivalents to common shareholders, preferred shareholders and noncontrolling interests.
Aid-in-construction [Member]
Represents activities related to aid-in-construction.
Outside Directors [Member]
Information pertaining to outside directors.
Other Non-current Assets, Aid-in-Construction Assets, Policy [Policy Text Block]
Disclosure of accounting policy for other non current assets, aid-in-construction assets.
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Deferred income taxes
Deferred Income Tax Liabilities, Net
hpk_NumberOfBarrelsDelivered
Number of Barrels, Delivered
Represents the number of barrels that have been delivered.
Crude Oil Derivative Basis Swap [Member]
Represents crude oil derivative basis swap.
Gain (loss) on derivative instruments, net
Fair Value Disclosures [Text Block]
Share-Based Payment Arrangement, Option [Member]
Supplemental cash flow information:
Current liabilities:
us-gaap_CurrentIncomeTaxExpenseBenefit
Total current income tax (benefit) expense
Schedule of Price Risk Derivatives [Table Text Block]
us-gaap_LiabilitiesCurrent
Total current liabilities
Federal
us-gaap_LettersOfCreditOutstandingAmount
Letters of Credit Outstanding, Amount
State
Accounts receivable
Accounts Receivable, after Allowance for Credit Loss, Current
us-gaap_ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves
Reclassification to proved properties
Customer Concentration Risk [Member]
Additions to exploratory/extension well costs
us-gaap_IncomeTaxesPaid
Cash paid for (received from) income taxes
Acquisitions [Text Block]
The entire disclosure for acquisitions.
Texas Comptroller of Public Accounts Office [Member]
Represents the Texas Comptroller of public accounts office.
Gathering, processing and transportation
The amount of expenses for gathering, processing and transportation.
us-gaap_SeveranceCosts1
Severance Costs
Founder Shares [Member]
Represents Founder shares.
Changes in working capital associated with oil and gas property additions
The amount of increase (decrease) in working capital associated with oil and natural gas property additions.
Revenue Benchmark [Member]
Lessee, Leases [Policy Text Block]
Long-Term Debt [Text Block]
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization
Exploratory Well Costs [Text Block]
The entire disclosure for exploratory well costs.
us-gaap_GeneralAndAdministrativeExpense
General and administrative expenses, including stock-based comp
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income before income taxes
us-gaap_GainsLossesOnExtinguishmentOfDebt
Gain (Loss) on Extinguishment of Debt
Additional paid-in capital
us-gaap_PaymentsToAcquireOtherProductiveAssets
Other property additions
us-gaap_PaymentsToAcquireOilAndGasPropertyAndEquipment
Payments to Acquire Oil and Gas Property and Equipment
Segment Reporting, Policy [Policy Text Block]
us-gaap_PaymentsToAcquireOilAndGasProperty
Acquisitions of crude oil and natural gas properties
Use of Estimates, Policy [Policy Text Block]
us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross
Restricted shares issued to employees
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)
Long-term debt
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Current assets:
us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures
us-gaap_AssetsCurrent
Total current assets
Fair Value, Recurring and Nonrecurring [Table]
Electric Power Infrastructure [Member]
Represents the Electric Power Infrastructure
us-gaap_InventoryRawMaterialsAndSupplies
Inventory, Raw Materials and Supplies, Gross
Debt Instrument, Name [Domain]
us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited
us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross
Restricted shares issued to employees (in shares)
Class of Stock [Domain]
us-gaap_DebtInstrumentUnamortizedDiscount
Debt Instrument, Unamortized Discount
Debt issuance costs, net
us-gaap_DebtInstrumentPeriodicPayment
Debt Instrument, Periodic Payment
Transportation Equipment [Member]
Debt Instrument [Axis]
us-gaap_DebtInstrumentUnamortizedPremium
Debt Instrument, Unamortized Premium
CASH FLOWS FROM OPERATING ACTIVITIES:
us-gaap_DerivativeNonmonetaryNotionalAmountVolume
Jul – Sep (Barrel of Oil)
CASH FLOWS FROM INVESTING ACTIVITIES:
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
CASH FLOWS FROM FINANCING ACTIVITIES:
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_PaymentsOfDebtIssuanceCosts
Debt issuance costs
Payments of Debt Issuance Costs
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash used in financing activities
Schedule of Derivative Assets and Liabilities By Counterparty [Table Text Block]
Tabular disclosure for the schedule of derivative assets and liabilities by counterparty.
Accretion expense
Operating Segments [Member]
Accounting Policies [Abstract]
Segments [Domain]
us-gaap_DeferredFinanceCostsGross
Debt Issuance Costs, Gross
us-gaap_AccumulatedAmortizationDeferredFinanceCosts
Accumulated Amortization, Debt Issuance Costs
us-gaap_UnamortizedDebtIssuanceExpense
Unamortized Debt Issuance Expense
Segments [Axis]
Accounts Receivable [Policy Text Block]
Income Statement [Abstract]
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal
Unproved properties
Crude Oil Delivery Commitments [Member]
Represents information related to Crude OIl Delivery Commitments.
us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted
Diluted net income attributable to common stockholders
us-gaap_DeferredIncomeTaxLiabilities
Deferred tax liabilities
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
us-gaap_DeferredIncomeTaxExpenseBenefit
Deferred income tax expense
hpk_SupplyCommitmentGrossBarrelsOfOilDeliveredPerDayRemainingTermOfContract
Supply Commitment, Gross Barrels of Oil Delivered Per Day, Remaining Term of Contract
Represents gross barrels of oil delivered per day for remaining term of contract under supply commitment.
Reallocation of participating earnings
Net (loss) income
Net income
Net income
us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Basic earnings attributable to common stockholders
Amortization of debt issuance costs
Amortization of Debt Issuance Costs
Operating Costs and Expenses:
hpk_SupplyCommitmentAmountCommitted
Supply Commitment, Amount Committed
Represents amount committed for supply commitment.
Natural Gas Derivative Basis Swap [Member]
Represents the natural gas derivative basis swap.
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
State
us-gaap_CostsAndExpenses
Total operating costs and expenses
Income Tax Disclosure [Text Block]
Restricted Stock [Member]
Net operating loss carryforwards
Accounting Standards Update and Change in Accounting Principle [Table]
us-gaap_IncomeTaxReceivable
Income Taxes Receivable
us-gaap_DeferredTaxAssetsNet
Deferred tax assets
Income Tax, Policy [Policy Text Block]
us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Income tax expense at U.S. federal statutory rate
Aid-in-construction Receivables [Member]
Information related to aid-in-construction receivables.
Other
us-gaap_DerivativePriceRiskOptionStrikePrice
Jul – Sep (in USD per Barrel of Oil)
Asset Retirement Obligation Disclosure [Text Block]
us-gaap_AssetRetirementObligation
Beginning asset retirement obligations
Ending asset retirement obligations
Jul – Sep (in USD per Millions of British Thermal Unit)
Bbls Per Day (in USD per Millions of British Thermal Unit)
us-gaap_CapitalizedExploratoryWellCostChargedToExpense1
Exploratory/extension well costs charged to exploration and abandonment expense
Related Party Transaction [Table]
Asset retirement obligations
hpk_DebtInstrumentCovenantMinimumCashThresholdForPrepaymentToBeDue
Debt Instrument, Covenant, Minimum Cash Threshold for Prepayment to be Due
The minimum amount of cash threshold for debt prepayments to become due required by the debt agreement.
Liabilities incurred from new wells
us-gaap_AssetRetirementObligationLiabilitiesSettled
Liabilities settled
Related Party Transactions Disclosure [Text Block]
us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther
Other
Accretion of discount
Vested, options (in shares)
Vested, options (in shares)
Vest, intrinsic value
us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
State income tax, net of federal income tax effect
Exercisable, options (in shares)
Exercisable, options (in shares)
Exercisable, weighted average exercise price (in dollars per share)
Exercisable, weighted average exercise price (in dollars per share)
Asset Retirement Obligation [Policy Text Block]
Exercisable, intrinsic value
Interest expense limitations
Vest, weighted average exercise price (in dollars per share)
Vest, weighted average exercise price (in dollars per share)
us-gaap_IncomeTaxReconciliationOtherAdjustments
Other, net
Fair Value Hierarchy and NAV [Domain]
WTG Gas Processing, L.P. [Member]
Represents the WTG Gas Processing, L.P.
Measurement Frequency [Domain]
us-gaap_IncomeTaxReconciliationTaxCredits
Tax Credits
Natural Gas Derivative Swap [Member]
Represents natural gas derivative swap.
Statement of Financial Position [Abstract]
us-gaap_DeferredTaxAssetsValuationAllowance
Less: Valuation allowance
Deferred Tax Assets, Valuation Allowance
us-gaap_IncomeTaxesPaidNet
Total Current
O, 2025, Q2, Dividends [Member]
Represents the second quarter of 2025.
us-gaap_DeferredTaxLiabilities
Net deferred tax liabilities
us-gaap_RepaymentsOfSeniorDebt
Repayments under Term Loan Credit Agreement
Noncurrent liabilities:
Fair Value, Recurring [Member]
us-gaap_DeferredTaxLiabilitiesOther
Other
Other noncurrent assets
us-gaap_IncreaseDecreaseInDeferredIncomeTaxes
Provision for deferred income taxes
dei_DocumentType
Document Type
Document Information [Line Items]
dei_DocumentQuarterlyReport
Document Quarterly Report
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
Document Information [Table]
Mercuria Energy Trading SA [Member]
Mercuria Energy Trading SA
Earnings per share:
dei_EntityInteractiveDataCurrent
Entity Interactive Data Current
dei_DocumentTransitionReport
Document Transition Report
Diluted (in shares)
Diluted weighted average shares outstanding (in shares)
us-gaap_OperatingExpenses
Total expenses
Macquarie Bank Limited [Member]
Macquarie Bank Limited
June 3, 2025 [Member]
Represents the date June 3, 2025.
Dilutive unvested restricted stock (in shares)
Basic (in shares)
Basic weighted average shares outstanding (in shares)
Derivative Instrument [Axis]
Basic net income (in dollars per share)
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table]
Supply Commitment [Axis]
Effective Income Tax Rate Reconciliation [Table]
hpk_MaximumAggregateMarketPriceOfCommonShares
Maximum Aggregate Market Price of Common Shares
The maximum aggregate market price of common shares the company can sell.
us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived
State
Title and Position [Domain]
us-gaap_TaxJurisdictionOfDomicileExtensibleEnumeration
Tax Jurisdiction of Domicile [Extensible Enumeration]
hpk_PolicyTable
us-gaap_IncomeTaxPaidFederalAfterRefundReceived
Federal
Income Tax Jurisdiction [Axis]
Amortization of discounts on long-term debt
Amortization of Debt Discount (Premium)
June 2, 2026 [Member]
Represents the June 2, 2026 date.
Document Fiscal Period Focus
Customer [Domain]
Document Fiscal Year Focus
Amendment Flag
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
us-gaap_OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization
Accumulated depletion, depreciation and amortization
Common Stock [Member]
Single Reportable Segment [Member]
Represents the single reportable segments
dei_DocumentPeriodEndDate
Document Period End Date
Building [Member]
us-gaap_DerivativeCapPrice
Jul – Sep (in USD per Barrel of Oil)
Long-Lived Asset, Class [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross
Legal Entity [Axis]
us-gaap_OilAndGasPropertySuccessfulEffortMethodNet
Total crude oil and natural gas properties, net
Crude oil and natural gas properties, using the successful efforts method of accounting:
Award Date [Axis]
dei_EntityFileNumber
Entity File Number
dei_EntityTaxIdentificationNumber
Entity Tax Identification Number
Supplemental disclosure of non-cash transactions:
Entity [Domain]
Entity Central Index Key
dei_EntityRegistrantName
Entity Registrant Name
us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
dei_EntityCurrentReportingStatus
Entity Current Reporting Status
us-gaap_DerivativeGainLossOnDerivativeNet
Derivative gain (loss), net
Loss on derivative instruments, net
Business Combination [Table]
dei_EntityIncorporationStateCountryCode
Entity Incorporation, State or Country Code
Current Fiscal Year End Date
us-gaap_DerivativeFloorPrice
Jul – Sep (in USD per Barrel of Oil)
dei_EntityFilerCategory
Entity Filer Category
dei_EntityShellCompany
Entity Shell Company
dei_EntityEmergingGrowthCompany
Entity Emerging Growth Company
Award Date [Domain]
dei_EntitySmallBusiness
Entity Small Business
us-gaap_OperatingIncomeLoss
Income from operations
Derivative instruments
us-gaap_DerivativeAssetsNoncurrent
Commodity price derivatives – noncurrent
Hedging Designation [Domain]
us-gaap_DerivativeAssets
Total assets
Derivative asset
us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
Total recurring fair value measurements, net
Derivative asset (liabilities)
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Derivative instruments
Commodity price derivatives – current
us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Noncash derivative gain (loss), net
us-gaap_ContractWithCustomerAssetNet
Contract with Customer, Asset, after Allowance for Credit Loss
us-gaap_InterestExpense
Interest expense
Supply Commitment Arrangement [Domain]
us-gaap_SegmentReportingOtherItemAmount
Other segment items
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Operating Revenues:
Derivative instruments
Commodity price derivatives – noncurrent
Commodity price derivatives – noncurrent
dei_EntityAddressStateOrProvince
Entity Address, State or Province
dei_EntityAddressCityOrTown
Entity Address, City or Town
Derivative instruments
us-gaap_DerivativeLiabilitiesCurrent
Commodity price derivatives – current
us-gaap_DeferredTaxLiabilitiesDerivatives
Unrecognized derivative gains, net
Retained earnings
us-gaap_InterestExpenseOperating
Interest expense, net
dei_EntityAddressAddressLine1
Entity Address, Address Line One
dei_CityAreaCode
City Area Code
us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Payment, Tax Withholding, Share-Based Payment Arrangement
dei_LocalPhoneNumber
Local Phone Number
dei_EntityAddressPostalZipCode
Entity Address, Postal Zip Code
hpk_DebtInstrumentCovenantMinimumAssetCoverageRatio
Debt Instrument, Covenant, Minimum Asset Coverage Ratio
A debt instrument covenant detailing the minimum asset coverage ratio required.
dei_Security12bTitle
Title of 12(b) Security
dei_SecurityExchangeName
Security Exchange Name
dei_TradingSymbol
Trading Symbol
Derivatives, Policy [Policy Text Block]
Class of Stock [Axis]
Base Rate [Member]
Commodity Contract [Member]
Variable Rate [Axis]
Variable Rate [Domain]
dei_EntityCommonStockSharesOutstanding
Entity Common Stock, Shares Outstanding (in shares)
Earnings Per Share [Text Block]
Hedging Designation [Axis]
Not Designated as Hedging Instrument [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table]
Scenario [Axis]
Guarantor Obligation [Table]
Scenario [Domain]
Forecast [Member]
Weighted average shares outstanding:
Crude Oil Derivative Swap [Member]
Crude Oil Derivative Swap
Derivative Instruments, Gain (Loss) [Table Text Block]
Proceeds received from exercise of warrants
Property, Plant, and Equipment [Table]
Crude Oil Derivative Collar [Member]
Crude Oil Derivative Collar
Oil and Gas, Capitalized Cost [Table]
Common stock, par value (in dollars per share)
Derivative Instruments, Gain (Loss) [Table]
Not Designated as Hedging Instrument, Trading [Member]
Basis of Accounting, Policy [Policy Text Block]
Derivative Contract [Domain]
Other expense
Receivable [Domain]
Long-Lived Asset, Class [Axis]
us-gaap_Assets
Total assets
Total assets
Cash and Cash Equivalents, Policy [Policy Text Block]
us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents
us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Defined Contribution Plan, Employer Discretionary Contribution Amount
us-gaap_AllowanceForDoubtfulAccountsReceivable
Accounts Receivable, Allowance for Credit Loss
Diluted net income (in dollars per share)
us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
Revenue from Contract with Customer [Policy Text Block]
Customer [Axis]
Oil and Gas [Policy Text Block]
Depletion, depreciation and amortization
Depletion, depreciation and amortization
Debt, Policy [Policy Text Block]
us-gaap_OilAndGasJointInterestBillingReceivables
Oil and Gas, Joint Interest Billing, Receivable
Schedule of Natural Gas Derivatives [Table Text Block]
The tabular disclosure explaining the natural gas derivative agreement.
hpk_SignificantExpenses
Total significant expenses
The total amount of expenses classified as significant.
Consolidation, Policy [Policy Text Block]
hpk_WorkoverExpense
Expense workover costs
The amount related to the workover costs during the period.
Jul – Sep (Millions of British Thermal Unit)
Bbls Per Day (Millions of British Thermal Unit)
Interest income
Receivable Type [Axis]
Cash paid for interest
Schedule of Long-Term Debt Instruments [Table Text Block]
hpk_ContractWithCustomerAssetAssetFunding
Contract with Customer, Asset, Asset Funding
Amount of increase to a contract with customer asset through funding.
hpk_ContractWithCustomerAssetPaymentsReceived
Contract with Customer, Asset, Payments Received
Represents the decrease in contract with customer assets through receipt of payment.
Inventory
O, 2025, Q1, Dividends [Member]
Represents 2025 Q1 dividends.
Senior Credit Facility Agreement [Member]
Represents a senior credit facility agreement.
us-gaap_StockholdersEquity
Total stockholders’ equity
Balance
Balance
Term Loan Credit Agreement [Member]
Term loan credit agreement.
us-gaap_PaymentsOfDividends
Dividends paid
Stock, Class of Stock [Table]
Concentration Risk Benchmark [Axis]
Nature of Operation, Product Information, Concentration of Risk [Table]
Concentration Risk Benchmark [Domain]
us-gaap_OperatingLeaseRightOfUseAsset
Operating Lease, Right-of-Use Asset
Revenue
Total operating revenues
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Crude oil and natural gas properties, principally due to differences in basis and depreciation and the deduction of intangible drilling costs for tax purposes
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Property, Plant, and Equipment [Table Text Block]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Commitments and Contingencies
Inventory, Policy [Policy Text Block]
us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Changes in valuation allowances
us-gaap_PaymentsToExploreAndDevelopOilAndGasProperties
Additions to crude oil and natural gas properties