XML 66 R51.htm IDEA: XBRL DOCUMENT
v3.23.3

Loans (Details) - Schedule of Allowance for Loan Losses by Portfolio Segment - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
One- to four-family [Member] |  |
Residential real estate |  |
Beginning balance | $ 800 | $ 794
Provision (credit) for loan losses | 73 | 37
Loans charged off | (29) | (31)
Recoveries | 13 |
Ending balance | 857 | 800
Multi-family [Member] |  |
Residential real estate |  |
Beginning balance | 231 | 291
Provision (credit) for loan losses | 47 | (60)
Loans charged off |  |
Recoveries |  |
Ending balance | 278 | 231
Construction [Member] |  |
Residential real estate |  |
Beginning balance | 4 | 12
Provision (credit) for loan losses | 37 | (8)
Loans charged off |  |
Recoveries |  |
Ending balance | 41 | 4
Land [Member] |  |
Residential real estate |  |
Beginning balance | 3 | 3
Provision (credit) for loan losses | (2) |
Loans charged off |  |
Recoveries |  |
Ending balance | 1 | 3
Farm [Member] |  |
Residential real estate |  |
Beginning balance | 5 | 5
Provision (credit) for loan losses | (1) |
Loans charged off |  |
Recoveries |  |
Ending balance | 4 | 5
Nonresidential real estate [Member] |  |
Residential real estate |  |
Beginning balance | 461 | 494
Provision (credit) for loan losses | (64) | (33)
Loans charged off |  |
Recoveries | 8 |
Ending balance | 405 | 461
Commercial and industrial [Member] |  |
Residential real estate |  |
Beginning balance | 2 | 5
Provision (credit) for loan losses | 21 | (3)
Loans charged off |  |
Recoveries |  |
Ending balance | 23 | 2
Loans on deposits [Member] |  |
Residential real estate |  |
Beginning balance | 1 | 2
Provision (credit) for loan losses |  | (1)
Loans charged off |  |
Recoveries |  |
Ending balance | 1 | 1
Home equity [Member] |  |
Residential real estate |  |
Beginning balance | 21 | 15
Provision (credit) for loan losses | 2 | 6
Loans charged off |  |
Recoveries |  |
Ending balance | 23 | 21
Automobile [Member] |  |
Residential real estate |  |
Beginning balance |  |
Provision (credit) for loan losses |  |
Loans charged off |  |
Recoveries |  |
Ending balance |  |
Unsecured [Member] |  |
Residential real estate |  |
Beginning balance | 1 | 1
Provision (credit) for loan losses |  | 2
Loans charged off |  | (4)
Recoveries |  | 2
Ending balance | 1 | 1
Total [Member] |  |
Residential real estate |  |
Beginning balance | 1,529 | 1,622
Provision (credit) for loan losses | 113 | (60)
Loans charged off | (29) | (35)
Recoveries | 21 | 2
Ending balance | $ 1,634 | $ 1,529

X
- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References No definition available. + Details
Name: | kffb_LoansAndLeasesReceivableAllowances
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | kffb_ResidentialRealEstateAbstract11
Namespace Prefix: | kffb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(4) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_AllowanceForLoanAndLeaseLossRecoveryOfBadDebts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of expense related to estimated loss from loan and lease transactions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(2) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 + Details
Name: | us-gaap_ProvisionForLoanAndLeaseLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | kffb_ResidentialRealEstateFamilyAxis=kffb_ResidentialRealEstateOneToFourFamilyMember
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_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=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_UnsecuredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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