Loans Receivable (Details) $ in Thousands	3 Months Ended	12 Months Ended
Sep. 30, 2026 USD ($) Unit Loan	Jun. 30, 2026 USD ($)
Loans Receivable [Abstract]
Loan receivables on non-accrual status	$ 0	$ 0
Estimated gross interest income that would have been recorded if non-accrual loans had been accruing interest at their original contracted rates	23	120
Residential loans in the process of foreclosure	$ 409
Number of loans identified as troubled debt restructuring (in Loan) \| Loan	0
Financing receivable, accrued interest, after allowance for credit loss	$ 1,711	$ 1,713
Multi-Family Residential [Member] \| Minimum [Member] \| Residential Property [Member] \| Real Estate Loans [Member]
Loans Receivable [Abstract]
Number of housing units included in collateralized property (in Unit) \| Unit	5

Number of financing receivables that have been modified by troubled debt restructurings.

No definition available.

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Period Type:	duration

- Definition

Represents the number of housing units included in the collateralized property, of financing receivable.

+ References

No definition available.

+ Details

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- Definition

Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

+ References

No definition available.

+ Details

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Namespace Prefix:	hfbl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, after allowance for credit loss, of accrued interest on financing receivable.

+ References

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-Name Accounting Standards Codification
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+ Details

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

- Definition

Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 35
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-35

+ Details

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

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=hfbl_MultiFamilyResidentialMember
Namespace Prefix:
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- Details

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- Details

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Namespace Prefix:
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- Details

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