XML 40 R30.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Loans Receivable (Details) - Schedule of allowance for loan losses and the recorded investment in loans by portfolio - USD ($) $ in Thousands | Sep. 30, 2022 | Jun. 30, 2022
--- | --- | ---
Loans Individually Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Loans individually evaluated |  | $ 5,290 | $ 5,226
Loans acquired with deteriorated credit quality | [1] | 391 | 400
Unpaid principal balance and recorded investment |  | 5,681 | 5,626
Ending allowance attributed to loans |  |  |
Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 288,620 | 270,486
Ending allowance attributed to loans |  | 1,642 | 1,529
Loans Collectively Evaluated for Impairment One [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 294,301 | 276,112
Ending allowance attributed to loans |  | 1,642 | 1,529
One-to Four-Family [Member] | Loans Individually Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Loans individually evaluated |  | 3,116 | 3,221
Loans acquired with deteriorated credit quality | [1] | 391 | 400
Unpaid principal balance and recorded investment |  | 3,507 | 3,621
One-to Four-Family [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 221,807 | 212,811
Ending allowance attributed to loans |  | 808 | 800
Multi-Family [Member] | Loans Individually Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Loans individually evaluated |  | 564 | 570
Loans acquired with deteriorated credit quality | [1] |  |
Unpaid principal balance and recorded investment |  | 564 | 570
Ending allowance attributed to loans |  |  |
Multi-Family [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 22,695 | 13,682
Ending allowance attributed to loans |  | 381 | 231
Farm [Member] | Loans Individually Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Loans individually evaluated |  | 261 | 270
Loans acquired with deteriorated credit quality | [1] |  |
Unpaid principal balance and recorded investment |  | 261 | 270
Ending allowance attributed to loans |  |  |
Farm [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 1,058 | 1,068
Ending allowance attributed to loans |  | 6 | 5
Nonresidential Real Estate [Member] | Loans Individually Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Loans individually evaluated |  | 1,349 | 1,073
Loans acquired with deteriorated credit quality | [1] |  |
Unpaid principal balance and recorded investment |  | 1,349 | 1,073
Ending allowance attributed to loans |  |  |
Nonresidential Real Estate [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 28,993 | 30,368
Ending allowance attributed to loans |  | 410 | 461
Construction [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 3,875 | 1,363
Ending allowance attributed to loans |  | 14 | 4
Land [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 266 | 1,062
Ending allowance attributed to loans |  |  | 3
Commercial Nonmortgage [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 978 |
Ending allowance attributed to loans |  | 2 |
Loans on Deposits [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 833 | 891
Ending allowance attributed to loans |  | 1 | 1
Home Equity [Member] | Loans Individually Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Loans individually evaluated |  |  | 87
Loans acquired with deteriorated credit quality | [1] |  |
Unpaid principal balance and recorded investment |  |  | 87
Ending allowance attributed to loans |  |  |
Home Equity [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 7,500 | 7,583
Ending allowance attributed to loans |  | 19 | 21
Automobile [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 112 | 117
Ending allowance attributed to loans |  |  |
Unsecured [Member] | Loans Individually Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Loans individually evaluated |  |  | 5
Loans acquired with deteriorated credit quality | [1] |  |
Unpaid principal balance and recorded investment |  |  | 5
Ending allowance attributed to loans |  |  |
Unsecured [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  | 503 | 535
Ending allowance attributed to loans |  | $ 1 | 1
Commercial and industrial [Member] | Loans Collectively Evaluated for Impairment [Member] |  |  |
Residential real estate: |  |  |
Unpaid principal balance and recorded investment |  |  | 1,006
Ending allowance attributed to loans |  |  | $ 2
[1] | These loans were evaluated at acquisition date at their estimated fair value and there has been no subsequent deterioration since acquisition.

X
- Definition Loans collectively evaluated for impairment, Unallocated Loans collectively evaluated for impair. + References No definition available. + Details
Name: | kffb_EndingAllowanceAttributedToLoan
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Loans individually evaluated for impairment, Ending loans balance. + References No definition available. + Details
Name: | kffb_EndingLoansBalance
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Loans individually evaluated for impairment, Loans acquired with deteriorated credit quality. + References No definition available. + Details
Name: | kffb_LoansAcquiredWithDeterioratedCreditQuality
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loans individually evaluated for impairment, Loans Individually evaluated + References No definition available. + Details
Name: | kffb_LoansIndividuallyEvaluated
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | kffb_ResidentialRealEstateAbstract2
Namespace Prefix: | kffb_
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: | kffb_FinancingReceivableAllowanceForCreditLossAxis=kffb_LoansCollectivelyEvaluatedForImpairmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kffb_FinancingReceivableAllowanceForCreditLossAxis=kffb_LoansCollectivelyEvaluatedForImpairmentOneMember
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_ResidentialRealEstateMultiFamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kffb_ResidentialRealEstateFamilyAxis=kffb_FarmMember
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: |

X
- Details
Name: | kffb_ResidentialRealEstateFamilyAxis=us-gaap_ConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kffb_ResidentialRealEstateFamilyAxis=us-gaap_LandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kffb_ResidentialRealEstateFamilyAxis=kffb_CommercialNonmortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kffb_ResidentialRealEstateFamilyAxis=kffb_LoansOnDepositsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kffb_ResidentialRealEstateFamilyAxis=us-gaap_HomeEquityLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kffb_ResidentialRealEstateFamilyAxis=us-gaap_AutomobilesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kffb_ResidentialRealEstateFamilyAxis=kffb_UnsecuredMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kffb_ResidentialRealEstateFamilyAxis=kffb_CommercialsAndIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |