XML 45 R34.htm IDEA: XBRL DOCUMENT v3.25.1

Loans Receivable - Schedule of Amortized Cost Basis of Collateral-Dependent Loans (Details) - Loans individually evaluated for impairment [Member] - USD ($) $ in Thousands	Mar. 31, 2025	Jun. 30, 2024
Amortized Cost Basis [Member]
Residential real estate:
Loans individually evaluated for impairment	$ 2,400	$ 4,599
Ending allowance on collateral- dependent loans [Member]
Residential real estate:
Loans individually evaluated for impairment
One-to-four-family [Member] | Amortized Cost Basis [Member]
Residential real estate:
Loans individually evaluated for impairment	1,463	2,674
One-to-four-family [Member] | Ending allowance on collateral- dependent loans [Member]
Residential real estate:
Loans individually evaluated for impairment
Nonresidential real estate [Member] | Amortized Cost Basis [Member]
Residential real estate:
Loans individually evaluated for impairment	937	1,925
Nonresidential real estate [Member] | Ending allowance on collateral- dependent loans [Member]
Residential real estate:
Loans individually evaluated for impairment

X

- Definition

Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.5.a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480418/310-10-S99-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-11C

+ Details

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

X

- References

No definition available.

+ Details

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

X

- Details

Name:	kffb_FinancingReceivableAllowanceForCreditLossAxis=kffb_LoansIndividuallyEvaluatedForImpairmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditLossStatusAxis=kffb_AmortizedCostBasisMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditLossStatusAxis=kffb_EndingAllowanceOnCollateralDependentLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	kffb_ResidentialRealEstateFamilyAxis=kffb_ResidentialRealEstateOneToFourFamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	kffb_ResidentialRealEstateFamilyAxis=kffb_NonresidentialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: