The increase in liquidity of a debt instrument after it is amended.

No definition available.

Name:	hpk_DebtInstrumentIncreaseInLiquidity
Namespace Prefix:	hpk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

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-Topic 835
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+ Details

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

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

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-Section S99
-Paragraph 1
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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

- Definition

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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

- Details

Name:	us-gaap_DividendsAxis=hpk_O2025Q3DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_DividendsAxis=hpk_O2025Q3DividendEquivalentDividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

Note 15 - Subsequent Events (Details Textual) - USD ($)		1 Months Ended	3 Months Ended					6 Months Ended
Note 15 - Subsequent Events (Details Textual) - USD ($)	Sep. 12, 2023	Aug. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Dividends declared per share (in dollars per share)				$ 0.04	$ 0.04	$ 0.04	$ 0.04	$ 0.08	$ 0.08
O 2025 Q3 Dividends [Member] \| Forecast [Member]
Dividends declared per share (in dollars per share)			$ 0.04
Dividends			$ 5,000,000
Dividends Payable			87,000
O 2025 Q3 Dividend Equivalent Dividends [Member] \| Forecast [Member]
Dividends			$ 531,000
Term Loan Credit Agreement [Member]
Debt Instrument, Periodic Payment	$ 30,000,000
Term Loan Credit Agreement [Member] \| Subsequent Event [Member]
Debt Instrument, Face Amount		$ 1,200,000,000
Debt Instrument, Increase in Liquidity		180,000,000
Debt Instrument, Periodic Payment		$ 30,000,000