XML 65 R50.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Loans (Details) - Schedule of analysis performed, the risk category of loans by class of loans - USD ($) $ in Thousands | Jun. 30, 2022 | Jun. 30, 2021
--- | --- | ---
Pass [Member] |  |
Residential real estate |  |
Loans receivable, gross | $ 267,768 | $ 289,122
Pass [Member] | One- to four-family [Member] |  |
Residential real estate |  |
Loans receivable, gross | 210,830 | 217,485
Pass [Member] | Multi-family [Member] |  |
Residential real estate |  |
Loans receivable, gross | 13,682 | 19,135
Pass [Member] | Construction [Member] |  |
Residential real estate |  |
Loans receivable, gross | 1,363 | 5,433
Pass [Member] | Land [Member] |  |
Residential real estate |  |
Loans receivable, gross | 1,062 | 1,308
Pass [Member] | Nonresidential real estate [Member] |  |
Residential real estate |  |
Loans receivable, gross | 29,666 | 32,748
Pass [Member] | Farm [Member] |  |
Residential real estate |  |
Loans receivable, gross |  | 1,960
Special Mention [Member] |  |
Residential real estate |  |
Loans receivable, gross | 896 | 1,559
Special Mention [Member] | One- to four-family [Member] |  |
Residential real estate |  |
Loans receivable, gross | 194 | 596
Special Mention [Member] | Multi-family [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Special Mention [Member] | Construction [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Special Mention [Member] | Land [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Special Mention [Member] | Nonresidential real estate [Member] |  |
Residential real estate |  |
Loans receivable, gross | 702 | 924
Special Mention [Member] | Farm [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Substandard [Member] |  |
Residential real estate |  |
Loans receivable, gross | 7,448 | 8,843
Substandard [Member] | One- to four-family [Member] |  |
Residential real estate |  |
Loans receivable, gross | 5,408 | 6,044
Substandard [Member] | Multi-family [Member] |  |
Residential real estate |  |
Loans receivable, gross | 570 | 646
Substandard [Member] | Construction [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Substandard [Member] | Land [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Substandard [Member] | Nonresidential real estate [Member] |  |
Residential real estate |  |
Loans receivable, gross | 1,073 | 1,820
Substandard [Member] | Farm [Member] |  |
Residential real estate |  |
Loans receivable, gross |  | 274
Doubtful [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Doubtful [Member] | One- to four-family [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Doubtful [Member] | Multi-family [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Doubtful [Member] | Construction [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Doubtful [Member] | Land [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Doubtful [Member] | Nonresidential real estate [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Doubtful [Member] | Farm [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Farm [Member] | Pass [Member] |  |
Residential real estate |  |
Loans receivable, gross | 1,068 |
Farm [Member] | Special Mention [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Farm [Member] | Substandard [Member] |  |
Residential real estate |  |
Loans receivable, gross | 270 |
Farm [Member] | Doubtful [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Commercial and industrial [Member] | Pass [Member] |  |
Residential real estate |  |
Loans receivable, gross | 1,006 | 2,259
Commercial and industrial [Member] | Special Mention [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Commercial and industrial [Member] | Substandard [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Commercial and industrial [Member] | Doubtful [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Loans on deposits [Member] | Pass [Member] |  |
Residential real estate |  |
Loans receivable, gross | 891 | 1,129
Loans on deposits [Member] | Special Mention [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Loans on deposits [Member] | Substandard [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Loans on deposits [Member] | Doubtful [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Home equity [Member] | Pass [Member] |  |
Residential real estate |  |
Loans receivable, gross | 7,548 | 7,044
Home equity [Member] | Special Mention [Member] |  |
Residential real estate |  |
Loans receivable, gross |  | 39
Home equity [Member] | Substandard [Member] |  |
Residential real estate |  |
Loans receivable, gross | 122 | 52
Home equity [Member] | Doubtful [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Automobile [Member] | Pass [Member] |  |
Residential real estate |  |
Loans receivable, gross | 117 | 75
Automobile [Member] | Special Mention [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Automobile [Member] | Substandard [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Automobile [Member] | Doubtful [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Unsecured [Member] | Pass [Member] |  |
Residential real estate |  |
Loans receivable, gross | 535 | 546
Unsecured [Member] | Special Mention [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |
Unsecured [Member] | Substandard [Member] |  |
Residential real estate |  |
Loans receivable, gross | 5 | 7
Unsecured [Member] | Doubtful [Member] |  |
Residential real estate |  |
Loans receivable, gross |  |

X
- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References No definition available. + Details
Name: | kffb_LoansAndLeaseReceivableGrossCarryingAmount
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | kffb_ResidentialRealEstateAbstract9
Namespace Prefix: | kffb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | kffb_ResidentialRealEstateFamilyAxis=srt_MultifamilyMember
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_NonresidentialRealEstateMember
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: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=kffb_FarmMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_DepositsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=kffb_UnsecuredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |