Document And Entity Information
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.
us-gaap_DerivativeGainLossOnDerivativeNet
Derivative gain (loss), net
Note To Financial Statement Details Textual
Significant Accounting Policies
Income tax expense at U.S. federal statutory rate
Note 2 - Basis of Presentation and Summary of Significant Accounting Policies
Note 4 - Fair Value Measurements
Note 5 - Derivative Financial Instruments
Note 6 - Exploratory Well Costs
us-gaap_OilAndGasJointInterestBillingReceivables
Oil and Gas Joint Interest Billing Receivables
Note 7 - Long-term Debt
Noncurrent liabilities:
Not Designated as Hedging Instrument [Member]
Note 8 - Asset Retirement Obligations
hpk_StockIssuedDuringPeriodSharesWarrantExercises
Stock Issued During Period, Shares, Warrant Exercises (in shares)
The number of shares issued during the period for warrant exercises.
Note 9 - Incentive Plans
Note 10 - Commitments and Contingencies
Income Tax Disclosure [Text Block]
Note 13 - Income Taxes
Note 14 - Earnings Per Share
Hedging Designation [Axis]
Note 2 - Basis of Presentation and Summary of Significant Accounting Policies - Other Property and Equipment, Net (Details)
Hedging Designation [Domain]
Note 4 - Fair Value Measurements - Assets and Liabilities Measured On Recurring Basis (Details)
us-gaap_LiabilitiesCurrent
Total current liabilities
us-gaap_AccumulatedAmortizationDeferredFinanceCosts
Accumulated Amortization, Debt Issuance Costs
Note 4 - Fair Value Measurements - Financial Instruments Fair Value (Details)
Supply Commitment [Axis]
Note 5 - Derivative Financial Instruments - Summary of the Effect of Derivatives on the Condensed Consolidated Statements of Operations (Details)
Supply Commitment Arrangement [Domain]
Note 5 - Derivative Financial Instruments - Price Risk Derivative Contracts (Details)
Other current liabilities
Note 5 - Derivative Financial Instruments - Net Derivative Liabilities By Counterparty (Details)
Note 6 - Exploratory 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)
June 1, 2022 [Member]
Represents June 1, 2022.
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)
Note 13 - Income Taxes - Income Tax Benefit and Effective Tax Rate (Details)
Note 13 - Income Taxes - Effective Income Tax Rate Reconciliation (Details)
Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details)
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Note 14 - Earnings Per Share - Basic and Diluted Net Income (Loss) Per Share Attributable to Common Stockholders (Details)
June 1, 2021 [Member]
Represents June 1, 2021.
Notes To Financial Statements
Notes To Financial Statements [Abstract]
us-gaap_DerivativeLiabilitiesCurrent
Derivatives
Crude Oil Sales [Member]
Represents information regarding crude oil sales.
hpk_NetCashReceiptsFromPaymentsOnDerivatives
Derivative settlements, net
The amount of net cash receipts from payments on derivatives.
Natural Gas Derivative Swap Q3 2022 [Member]
Related to a natural gas derivative swap Q3 2022.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)
Natural Gas Derivative Swap Q4 2022 [Member]
Related to a natural gas derivative swap Q4 20232.
Natural Gas and NGL Sales [Member]
Represents information regarding natural gas and NGL sales.
Vested, remaining term (Year)
Exercisable (in shares)
Less current portion of long-term debt
Exercisable, weighted average exercise price (in dollars per share)
Exercisable, intrinsic value
Vested (in shares)
Vested, weighted average exercise price (in dollars per share)
Vested, intrinsic value
Natural Gas Derivative Swap 2022 [Member]
Related to a natural gas derivative swap 2022.
Exercisable, remaining term (Year)
Commodity Contract [Member]
Outstanding, remaining term (Year)
Outstanding, intrinsic value
TXU Energy Retail Company LLC [Member]
Represents TXU Energy Retail Company LLC.
Retirement Plan Name [Axis]
Retirement Plan Name [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Outstanding, weighted average exercise price (in dollars per share)
Outstanding, weighted average exercise price (in dollars per share)
us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
Accounts Payable and Accrued Liabilities, Current, Total
Volume (MBbls) (Barrel of Oil)
Forfeitures, weighted average exercise price (in dollars per share)
Dividend Equivalent [Member]
Represents dividend equivalent.
Volume (MMBtu) (Millions of British Thermal Unit)
Awards granted, weighted average exercise price (in dollars per share)
Exercised, weighted average exercise price (in dollars per share)
Accrued liabilities
Revolving Credit Facility [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Awards issued under plan (in shares)
Outstanding (in shares)
Outstanding (in shares)
Credit Facility [Axis]
Credit Facility [Domain]
us-gaap_PolicyTextBlockAbstract
Accounting Policies
Schedule of Change in Asset Retirement Obligation [Table Text Block]
Proceeds from sales of properties
us-gaap_PaymentsToAcquireOtherProductiveAssets
Other property additions
us-gaap_StockIssued1
Stock issued for acquisition
Awards available for future grant (in shares)
Revenues and royalties payable
Dilutive unvested restricted stock (in shares)
Supplemental disclosure of non-cash transactions:
Crude Oil, Natural Gas and Natural Gas Liquids [Member]
Represents information regarding crude oil, natural gas and natural gas liquids.
Approved and authorized awards (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)
Weighted average shares outstanding:
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)
Grantee Status [Domain]
Accounts Payable and Accrued Liabilities, Policy [Policy Text Block]
Disclosure for accounts payable and accrued liabilities.
Grantee Status [Axis]
Accounts payable - trade
us-gaap_PaymentsToAcquireOilAndGasPropertyAndEquipment
Payments to Acquire Oil and Gas Property and Equipment, Total
us-gaap_PaymentsToExploreAndDevelopOilAndGasProperties
Additions to crude oil and natural gas properties
Current liabilities:
us-gaap_PaymentsToAcquireOilAndGasProperty
Acquisitions of crude oil and natural gas properties
us-gaap_Assets
Total assets
Supplemental cash flow information:
Senior notes (a)
us-gaap_LongTermDebtFairValue
Plan Name [Axis]
Plan Name [Domain]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
Crude oil and natural gas production
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Basic earnings attributable to common stockholders
Field Equipment [Member]
Represents information regarding field equipment.
us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted
Diluted net income attributable to common stockholders
Reallocation of participating earnings
hpk_OilAndNaturalGasMarketingContractsTermOverWhichConsiderationIsReceivedFromPurchaser
Oil and Natural Gas Marketing Contracts, Term Over Which Consideration is Received from Purchaser (Month)
Represents the term over which consideration is received from the purchaser under oil and natural gas marketing contracts.
us-gaap_IncomeTaxReceivable
Income Taxes Receivable
Share-Based Payment Arrangement [Text Block]
us-gaap_PrepaidExpenseCurrentAndNoncurrent
Prepaid Expense
Business Description and Basis of Presentation [Text Block]
Award Type [Domain]
Award Date [Axis]
Award Date [Domain]
Net income
Net income
Basis of Presentation and Significant Accounting Policies [Text Block]
Award Type [Axis]
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.
The 2020 Long-term Incentive Plan [Member]
Represents information related to the 2020 Long-term Incentive Plan.
hpk_CapitalizedExploratoryWellCostsMaximumTerm
Capitalized Exploratory Well Costs, Maximum Term (Year)
Represents the maximum term for which all capitalized exploratory well costs have been capitalized.
Restricted Stock [Member]
Share-Based Payment Arrangement, Option [Member]
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Commitments and Contingencies Disclosure [Text Block]
Commitments and contingencies (Note 10)
Other property and equipment, net
us-gaap_Dividends
Dividends, Total
us-gaap_DerivativeAssets
Commodity price derivatives
Schedule of Price Risk Derivatives [Table Text Block]
us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
Participating basic earnings (a)
Lion Oil Trading and Transportation, LLC [Member]
Represents Lion Oil Trading and Transportation, LLC.
Derivative Instrument [Axis]
Derivative Contract [Domain]
CASH FLOWS FROM INVESTING ACTIVITIES:
Earnings per share:
Earnings Per Share [Text Block]
Accounts payable, accrued liabilities and other current liabilities
us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
us-gaap_DeferredFinanceCostsGross
Debt Issuance Costs, Gross
Letter of Credit [Member]
us-gaap_RelatedPartyTransactionAmountsOfTransaction
Related Party Transaction, Amounts of Transaction
Related Party Transactions Disclosure [Text Block]
Income tax expense
Total income tax expense (benefit)
Income Tax Expense (Benefit), Total
us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Derivative-related activity
Noncash derivative gain (loss), net
Derivative gain (loss), net
Settlements of Derivative Contracts [Member]
Related to settlements of derivative contracts.
Largest Purchaser [Member]
Related to largest purchaser.
Prepaid Expense [Policy Text Block]
Disclosure for the accounting policy for prepaid expense.
Employee Directors [Member]
Related to employee directors.
Contractual Equity-based Bonus [Member]
Related to contractual equity-based bonus.
Pilot Exploration Inc. [Member]
Related to Pilot Exploration Inc.
Water Treatment Services [Member]
Related to water treatment services.
Bank of America, National Association [Member]
Related to Bank of America, National Association.
Citizens Bank, National Association [Member]
Related to Citizens Bank, National Association.
Senior Unsecured Notes Due 2024 [Member]
Related to senior unsecured notes due 2024.
us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Defined Contribution Plan, Employer Discretionary Contribution Amount
Texas Margin Tax [Member]
Related to Texas margin tax.
us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent
Flat Top Operating Area [Member]
Related to Flat Top operating area.
us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Cash and cash equivalents
Production and ad valorem taxes
Stock-based compensation
Share-Based Payment Arrangement, Expense
Additions to asset retirement obligations
Accretion expense
Accretion of discount
Accretion of discount
Proceeds from subscription receivable from exercises of warrants
Amount of cash inflow from subscription receivable from exercises of warrants.
Amendment Flag
City Area Code
Use of Estimates, Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_SharesOutstanding
Balance, December 31, 2021 (in shares)
Balance (in shares)
Common stock, shares outstanding (in shares)
Common Stock, Shares, Outstanding, Ending Balance (in shares)
Preferred stock, shares outstanding (in shares)
Exercise of warrants
Value of stock issued for exercise of warrants.
Exercise of warrants (in shares)
Shares of stock issued for exercise of warrants.
Current Fiscal Year End Date
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
Advances from joint interest owners
Amount of advances from joint interest owners for costs incurred on joint interest wells.
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
hpk_DividendEquivalentsCash
Dividend equivalents declared on outstanding stock options ($0.025 per share)
Amount of paid and unpaid cash dividends equivalents declared for classes of stock, for example, but not limited to, common and preferred.
Dividend Equivalents, Per Share, Declared (in dollars per share)
Dividend equivalents declared, per share (in dollars per share)
Aggregate dividend equivalents declared during the period for each share of stock outstanding.
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses, inventory and other assets
Document Fiscal Period Focus
Document Fiscal Year Focus
us-gaap_IncreaseDecreaseInDeferredIncomeTaxes
Deferred income taxes
Consolidation, Policy [Policy Text Block]
Document Period End Date
Liabilities incurred from wells acquired
Amount of asset retirement obligations liabilities assumed during the period.
Entity File Number
Entity Ex Transition Period
us-gaap_DividendsCash
Dividends declared ($0.025 per share)
Fifth Third Bank, National Association [Member]
Information pertaining Fifth Third Bank, National Association.
Entity Emerging Growth Company
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Document Type
Entity Small Business
Entity Shell Company
Document Information [Line Items]
Document Information [Table]
Entity Filer Category
Debt Instrument [Axis]
Entity Current Reporting Status
Debt Instrument, Name [Domain]
hpk_DebtInstrumentCovenantMaximumTotalDebtToEbitdaxRatio
Debt Instrument, Covenant, Maximum Total Debt to EBITDAX Ratio
The maximum total debt to EBITDAX ratio required by the debt agreement.
Variable Rate [Domain]
Fed Funds Effective Rate Overnight Index Swap Rate [Member]
us-gaap_AccountsReceivableNet
Accounts Receivable, after Allowance for Credit Loss, Total
Schedule of Long-Term Debt Instruments [Table Text Block]
The 401K Plan [Member]
Information pertaining to the 401K plan.
Variable Rate [Axis]
hpk_DebtInstrumentCovenantMinimumCurrentRatio
Debt Instrument, Covenant, Minimum Current Ratio
The minimum current ratio required by the debt agreement.
Compensation costs included in net income
Exploration and abandonment expense
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
Entity Tax Identification Number
Entity Central Index Key
Entity Registrant Name
Entity [Domain]
Customer Concentration Risk [Member]
Legal Entity [Axis]
Entity Address, Address Line One
us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts
Stock issuance costs
Senior Unsecured Notes and Revolving Credit Facility [Member]
Related to senior unsecured notes and revolving credit facility.
Entity Address, City or Town
Entity Address, Postal Zip Code
hpk_PaymentsOfDividendsEquivalents
Dividend equivalents paid
Cash outflow in the form of dividends equivalents to common shareholders, preferred shareholders and noncontrolling interests.
Entity Address, State or Province
Concentration Risk Type [Axis]
Concentration Risk Type [Domain]
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.
hpk_AccumulatedAmortizationDebtDiscount
Accumulated Amortization, Debt Discount
Amount of accumulated amortization of debt discount.
Entity Common Stock, Shares Outstanding
hpk_NumberOfBarrelsDelivered
Number of Barrels, Delivered (Barrel of Oil)
Represents the number of barrels that have been delivered.
Revenue Benchmark [Member]
Long-Term Debt [Text Block]
hpk_StockIssuedDuringPeriodSharesWarrantsAndStockOptionsExercised
Stock Issued During Period, Shares, Warrants and Stock Options Exercised (in shares)
The number of shares issued during the period for the exercise of warrants and stock options.
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Stock issued for acquisition (in shares)
Stock Issued During Period, Shares, Acquisitions (in shares)
Local Phone Number
Stock issued for acquisition
Shares issued upon options being exercised (in shares)
Exercised (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)
us-gaap_TableTextBlock
Notes Tables
hpk_SupplyCommitmentMinimumTonsOfSand
Supply Commitment, Minimum Tons of Sand
The minimum tons of sand under supply commitment.
Restricted shares issued to outside directors (in shares)
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Shares issued upon options being exercised
us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Line of Credit Facility, Current Borrowing Capacity
Restricted shares issued to outside directors
us-gaap_LineOfCreditFacilityCommitmentFeeAmount
Line of Credit Facility, Commitment Fee Amount
us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage
Sand Commitments [Member]
Related to sand commitments.
Related Party [Axis]
Related Party [Domain]
hpk_SupplyCommitmentMinimumBarrelsOfProducedWater
Supply Commitment, Minimum Barrels of Produced Water
The minimum barrels of produced water under supply commitment.
Acquisitions [Text Block]
The entire disclosure for acquisitions.
us-gaap_AreaOfLand
Area of Land (Acre)
General and administrative
Additions to exploratory well costs
us-gaap_CapitalizedExploratoryWellCosts
Beginning capitalized exploratory well costs
Ending capitalized exploratory well costs
Awards granted (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Forfeitures (in shares)
Changes in working capital associated with crude oil and natural gas property additions
The amount of increase (decrease) in working capital associated with oil and natural gas property additions.
Exploratory well costs charged to exploration and abandonment expense
us-gaap_ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves
Reclassification to proved properties
Line of Credit Facility, Lender [Domain]
The 10.625% Senior Notes [Member]
Related to the 10.625% seniro notes.
Stock issued in private placement (in shares)
Stock Issued During Period, Shares, New Issues (in shares)
Capitalized Exploratory Well Costs, Roll Forward [Table Text Block]
Lender Name [Axis]
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders' equity
Reported Value Measurement [Member]
Stock Issued During Period, Value, New Issues
Exploratory Well Costs [Text Block]
The entire disclosure for exploratory well costs.
Retained earnings (accumulated deficit)
Exploration and abandonments
Crude Oil Derivative Swap Q3 2022 [Member]
Related to a crude oil derivative swap Q3 2022.
Crude Oil Derivative Swap Q4 2022 [Member]
Related to a crude oil derivative swap Q4 2022.
Crude Oil Derivative Swap Q1 2023 [Member]
Related to a crude oil derivative swap Q1 2023.
Crude Oil Derivative Swap Q2 2023 [Member]
Related to a crude oil derivative swap Q2 2023.
us-gaap_InterestExpense
Interest expense
Liabilities incurred from new wells
Derivative Instruments, Gain (Loss) [Table Text Block]
Asset Retirement Obligation Disclosure [Text Block]
Changes in operating assets and liabilities:
Amortization of debt issuance costs
Amortization of Debt Issuance Costs
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Subsequent Event [Member]
us-gaap_OperatingLeaseLiabilityNoncurrent
Operating Lease, Liability, Noncurrent
us-gaap_OperatingLeaseLiability
Operating Lease, Liability, Total
Subsequent Event Type [Axis]
us-gaap_OperatingLeaseLiabilityCurrent
Operating Lease, Liability, Current
Subsequent Event Type [Domain]
Subsequent Events [Text Block]
us-gaap_OperatingLeaseRightOfUseAsset
Operating Lease, Right-of-Use Asset
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total lease payments
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less present value discount
us-gaap_DeferredIncomeTaxExpenseBenefit
Deferred income tax expense (benefit)
Industry-Specific Policies, Oil and Gas [Policy Text Block]
Electric Power Infrastructure [Member]
Related to electric power infrastructure.
2023
Segment Reporting, Policy [Policy Text Block]
Share-Based Payment Arrangement, Employee [Member]
Other noncurrent assets
Stock-based compensation expense
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Lessee, Leases [Policy Text Block]
Remainder of 2022
Share-Based Payment Arrangement, Nonemployee [Member]
Amortization of original issue discount on senior notes
Amortization of Debt Discount (Premium)
Income Tax, Policy [Policy Text Block]
Depletion, depreciation and amortization
Schedule of Derivative Assets and Liabilities By Counterparty [Table Text Block]
Tabular disclosure for the schedule of derivative assets and liabilities by counterparty.
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share (in dollars per share)
us-gaap_OilAndGasPropertySuccessfulEffortMethodNet
Total crude oil and natural gas properties, net
us-gaap_AssetsCurrent
Total current assets
Cash and cash equivalents
us-gaap_CashAndCashEquivalentsFairValueDisclosure
Share-Based Payment Arrangement [Policy Text Block]
Stockholders' Equity Note Disclosure [Text Block]
Deposits
Common stock, $0.0001 par value, 600,000,000 shares authorized, 113,162,827 and 96,774,185 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively
Adjustments to reconcile net income to net cash provided by operations:
Measurement Frequency [Axis]
Measurement Frequency [Domain]
Fair Value, Recurring [Member]
Crude Oil Delivery Commitments [Member]
Represents information related to Crude OIl Delivery Commitments.
Common stock, shares authorized (in shares)
Common Stock, Shares, Issued (in shares)
Common stock, par value (in dollars per share)
hpk_SupplyCommitmentGrossBarrelsOfOilDeliveredPerDayYearOne
Supply Commitment, Gross Barrels of Oil Delivered Per Day, Year One (Barrel of Oil)
Represents gross barrels of delivered per day for year one under supply commitment.
hpk_SupplyCommitmentGrossBarrelsOfOilDeliveredPerDayYearTwo
Supply Commitment, Gross Barrels of Oil Delivered Per Day, Year Two (Barrel of Oil)
Represents gross barrels of delivered per day for year two under supply commitment.
hpk_SupplyCommitmentGrossBarrelsOfOilDeliveredPerDayRemainingTermOfContract
Supply Commitment, Gross Barrels of Oil Delivered Per Day, Remaining Term of Contract (Barrel of Oil)
Represents gross barrels of oil delivered per day for remaining term of contract under supply commitment.
Revenue from Contract with Customer [Policy Text Block]
Oncor [Member]
Represents information related to Oncor.
us-gaap_DerivativeAssetsCurrent
Derivatives
hpk_SupplyCommitmentRemainingTermOfContract
Supply Commitment, Remaining Term of Contract (Year)
Represents remaining term of contract for supply commitment.
us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Valuation Allowance
Statistical Measurement [Domain]
Maximum [Member]
Minimum [Member]
Product and Service [Axis]
Product and Service [Domain]
Asset Retirement Obligation [Policy Text Block]
us-gaap_DeferredTaxAssetsNet
Deferred tax assets
Statistical Measurement [Axis]
Preferred stock, $0.0001 par value, 10,000,000 shares authorized, none issued and outstanding at September 30, 2022 and December 31, 2021
Debt, Policy [Policy Text Block]
hpk_SupplyCommitmentAmountCommitted
Supply Commitment, Amount Committed
Represents amount committed for supply commitment.
Preferred Stock, Shares Issued (in shares)
Interest paid
Prepaid expenses
Income taxes paid
Other
Geographical [Axis]
Geographical [Domain]
us-gaap_DeferredTaxAssetsGross
Deferred Tax Assets, Gross, Total
Property, Plant and Equipment [Table Text Block]
Preferred stock, shares authorized (in shares)
us-gaap_DeferredIncomeTaxLiabilities
Deferred tax liabilities
us-gaap_InventoryLIFOReserve
Inventory, LIFO Reserve
Inventory
Portion at Fair Value Measurement [Member] [Default]
Preferred stock, par value (in dollars per share)
Estimate of Fair Value Measurement [Member]
us-gaap_InventoryRawMaterialsAndSupplies
Inventory, Raw Materials and Supplies, Gross, Total
Measurement Basis [Axis]
Fair Value, Inputs, Level 3 [Member]
Fair Value Hierarchy and NAV [Domain]
Unrecognized derivative losses
Customer [Axis]
Customer [Domain]
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value Hierarchy and NAV [Axis]
Aid-in-construction Receivables [Member]
Information related to aid-in-construction receivables.
Cumulative Effect, Period of Adoption [Domain]
Cumulative Effect, Period of Adoption [Axis]
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property, Plant and Equipment, Useful Life (Year)
Cumulative Effect, Period of Adoption, Adjustment [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
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.
Statement [Line Items]
us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Accounts Receivable, Allowance for Credit Loss, Current
TEXAS
Accounts receivable
Accounts Receivable, after Allowance for Credit Loss, Current, Total
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
London Interbank Offered Rate (LIBOR), Applicable Margin [Member]
Interest rate applicable margin at which a bank borrows funds from other banks in the London interbank market.
Additional paid-in capital
Interest expense limitations
Operating Revenues:
Building [Member]
Stockholders' equity:
Land [Member]
Leasehold Improvements [Member]
WTG Gas Processing, L.P. [Member]
Represents the WTG Gas Processing, L.P.
us-gaap_OtherNonoperatingExpense
Other expense
Property, Plant and Equipment, Policy [Policy Text Block]
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset [Domain]
Net operating loss carryforwards
Current Assets:
hpk_AcquisitionAreaOfWorkingInterestsInProducingPropertiesAndSaltwaterDisposalWells
Acquisition, Area of Working Interests in Producing Properties and Salt-water Disposal Wells (Acre)
Represents the area of working interest in producing properties and salt-water disposal wells to be aquired.
Quarterly Dividend [Member]
Represents the quarterly dividend.
Fair Value Disclosures [Text Block]
Fair Value, by Balance Sheet Grouping [Table Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents, beginning of period
Cash and cash equivalents, end of period
Inventory, Policy [Policy Text Block]
Interest and other income
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net decrease in cash and cash equivalents
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by financing activities
Asset retirement obligations
us-gaap_OperatingIncomeLoss
Income from operations
Crude Oil Derivative Swap 2022 [Member]
Related to a crude oil derivative swap 2022.
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_DeferredTaxLiabilities
Net deferred tax liabilities
Counterparty Name [Axis]
Counterparty Name [Domain]
Deferred income taxes
Deferred Income Tax Liabilities, Net
Derivatives, Policy [Policy Text Block]
us-gaap_DerivativeLiabilities
Commodity price derivatives
Total liabilities
Net derivative liabilities
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total
us-gaap_DeferredTaxLiabilitiesDerivatives
Unrecognized derivative gains
us-gaap_PaymentsOfStockIssuanceCosts
Stock issuance costs
Concentration Risk, Credit Risk, Policy [Policy Text Block]
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
us-gaap_LettersOfCreditOutstandingAmount
Letters of Credit Outstanding, Amount
us-gaap_PaymentsOfDividends
Dividends paid
us-gaap_CostsAndExpenses
Total operating costs and expenses
Operating Costs and Expenses:
Scenario [Domain]
Proceeds from exercises of warrants
Forecast [Member]
Retained Earnings [Member]
Proceeds from issuance of common stock in private placement
us-gaap_OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization
Accumulated depletion, depreciation and amortization
Crude oil sales
Proceeds from exercises of stock options
Crude oil and natural gas properties, using the successful efforts method of accounting:
Title of Individual [Domain]
State
us-gaap_ProceedsFromIssuanceOfCommonStock
Proceeds from Issuance of Common Stock
Unproved properties
Title of Individual [Axis]
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
State
Proved properties
Scenario [Axis]
Additional Paid-in Capital [Member]
Common Stock [Member]
Federal
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal
Equity Components [Axis]
Equity Component [Domain]
us-gaap_LongTermDebt
Long term debt
us-gaap_CurrentIncomeTaxExpenseBenefit
Total current income tax expense (benefit)
Other Noncurrent Assets [Member]
Other Liabilities [Member]
us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)
Other Current Liabilities [Member]
Other Noncurrent Liabilities [Member]
us-gaap_ClassOfWarrantOrRightOutstanding
Class of Warrant or Right, Outstanding (in shares)
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income before income taxes
us-gaap_PaymentsOfDebtIssuanceCosts
Debt issuance costs
Payments of Debt Issuance Costs
State and Local Jurisdiction [Member]
Income Tax Authority, Name [Axis]
us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
Debt issuance costs, net (a)
Income Tax Authority, Name [Domain]
Income Tax Authority [Axis]
Income Tax Authority [Domain]
Transportation Equipment [Member]
Accounts Receivable [Policy Text Block]
Technology Equipment [Member]
Cash and Cash Equivalents, Policy [Policy Text Block]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
us-gaap_DebtInstrumentUnamortizedDiscount
Debt Instrument, Unamortized Discount, Total
Discounts, net (b)
Document Quarterly Report
Entity Incorporation, State or Country Code
Long-term debt
Long-Term Debt, Gross
Accounting Policies [Abstract]
Document Transition Report
Basis of Accounting, Policy [Policy Text Block]
Concentration Risk Disclosure [Text Block]
Entity Interactive Data Current
Dividends declared per share (in dollars per share)
Dividends declared, per share (in dollars per share)
Receivable Type [Axis]
Receivable [Domain]
Borrowings under revolving credit facility
Proceeds from issuance of senior unsecured notes, net of discount
us-gaap_AssetRetirementObligation
Beginning asset retirement obligations
Ending asset retirement obligations
Diluted (in shares)
Diluted weighted average shares outstanding (in shares)
us-gaap_RepaymentsOfLinesOfCredit
Repayments under revolving credit facility
Statement [Table]
Statement of Financial Position [Abstract]
Diluted net income (in dollars per share)
Basic (in shares)
Basic weighted average shares outstanding (in shares)
Effective income tax rate
Basic net income (in dollars per share)
Statement of Cash Flows [Abstract]
us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
Total recurring fair value measurements
Statement of Stockholders' Equity [Abstract]
Income Statement [Abstract]
us-gaap_ProceedsFromIssuanceOfDebt
Proceeds from Issuance of Debt
Price per Bbl (in dollars per share)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Asset Acquisition [Axis]
us-gaap_AssetAcquisitionConsiderationTransferred
Asset Acquisition, Consideration Transferred, Total
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]
us-gaap_IncomeTaxReconciliationOtherAdjustments
Other, net
CASH FLOWS FROM FINANCING ACTIVITIES:
us-gaap_OtherLiabilitiesNoncurrent
Other
us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Asset Acquisition [Domain]
Limited tax benefit due to stock-based compensation
us-gaap_DividendsPayableCurrentAndNoncurrent
Dividends Payable
us-gaap_DerivativeLiabilitiesNoncurrent
Derivatives
Dividends [Axis]
Dividends [Domain]
us-gaap_StockholdersEquity
Total stockholders' equity
Balance, December 31, 2021
Balance
Class of Stock [Axis]
Long-term debt, net
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
us-gaap_DeferredTaxAssetInterestCarryforward
Stock-based compensation
State deferred income taxes
Warrant [Member]
Class of Stock [Domain]
Security Exchange Name
Title of 12(b) Security
Trading Symbol