XML 48 R37.htm IDEA: XBRL DOCUMENT
v3.24.3

Loans Receivable (Details) - Schedule of Principal Balance Outstanding in Past Due Loans - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | $ 10,664 | $ 8,530
Total | 335,316 | 335,152
Pass | 327,953 | 327,184
Special Mention | 785 | 797
Substandard | 6,578 | 7,171
Doubtful |  |
Land [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  | 55
Total |  | 964
Pass |  | 936
Special Mention |  |
Substandard |  | 28
Doubtful |  |
Farm [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
Total |  | 1,169
Pass |  | 1,169
Special Mention |  |
Substandard |  |
Doubtful |  |
Nonresidential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  | 840
Total |  | 34,308
Pass |  | 32,253
Special Mention |  | 130
Substandard |  | 1,925
Doubtful |  |
Commercial and industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  | 4
Total |  | 700
Pass |  | 700
Special Mention |  |
Substandard |  |
Doubtful |  |
One-to four-family [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 6,625 | 6,444
Total | 255,522 | 256,216
Pass | 250,763 | 250,485
Special Mention | 120 | 667
Substandard | 4,639 | 5,064
Doubtful |  |
Multi-family [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 251 |
Total | 15,532 | 15,815
Pass | 15,532 | 15,815
Special Mention |  |
Substandard |  |
Doubtful |  |
Construction [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 1,447 | 1,145
Total | 13,529 | 13,815
Pass | 13,529 | 13,815
Special Mention |  |
Substandard |  |
Doubtful |  |
Construction [Member] | Land [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 53 |
Total | 1,128 |
Pass | 1,100 |
Special Mention |  |
Substandard | 28 |
Doubtful |  |
Construction [Member] | Farm [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,578 |
Pass | 1,578 |
Special Mention |  |
Substandard |  |
Doubtful |  |
Construction [Member] | Nonresidential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 2,221 |
Total | 34,408 |
Pass | 31,832 |
Special Mention | 665 |
Substandard | 1,911 |
Doubtful |  |
Construction [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 616 |
Pass | 616 |
Special Mention |  |
Substandard |  |
Doubtful |  |
Loans on deposits [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
Total | 813 | 819
Pass | 813 | 819
Special Mention |  |
Substandard |  |
Doubtful |  |
Home Equity [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  | 28
Total | 11,398 | 10,644
Pass | 11,398 | 10,490
Special Mention |  |
Substandard |  | 154
Doubtful |  |
Automobiles [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
Total | 116 | 117
Pass | 116 | 117
Special Mention |  |
Substandard |  |
Doubtful |  |
Unsecured [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 67 | 14
Total | 676 | 585
Pass | 676 | 585
Special Mention |  |
Substandard |  |
Doubtful |  |
30-59 Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 7,886 | 6,515
30-59 Days Past Due [Member] | Land [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  | 55
30-59 Days Past Due [Member] | Farm [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
30-59 Days Past Due [Member] | Nonresidential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  | 840
30-59 Days Past Due [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  | 4
30-59 Days Past Due [Member] | One-to four-family [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 4,734 | 4,517
30-59 Days Past Due [Member] | Multi-family [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 251 |
30-59 Days Past Due [Member] | Construction [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 1,447 | 1,085
30-59 Days Past Due [Member] | Construction [Member] | Land [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 53 |
30-59 Days Past Due [Member] | Construction [Member] | Farm [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
30-59 Days Past Due [Member] | Construction [Member] | Nonresidential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 1,389 |
30-59 Days Past Due [Member] | Construction [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
30-59 Days Past Due [Member] | Loans on deposits [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
30-59 Days Past Due [Member] | Home Equity [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
30-59 Days Past Due [Member] | Automobiles [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
30-59 Days Past Due [Member] | Unsecured [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 12 | 14
60-89 Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 1,323 | 907
60-89 Days Past Due [Member] | Land [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Farm [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Nonresidential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | One-to four-family [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 758 | 847
60-89 Days Past Due [Member] | Multi-family [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Construction [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  | 60
60-89 Days Past Due [Member] | Construction [Member] | Land [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Construction [Member] | Farm [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Construction [Member] | Nonresidential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 565 |
60-89 Days Past Due [Member] | Construction [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Loans on deposits [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Home Equity [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Automobiles [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
60-89 Days Past Due [Member] | Unsecured [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 1,455 | 1,108
90 Days or Greater [Member] | Land [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] | Farm [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] | Nonresidential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] | One-to four-family [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 1,133 | 1,080
90 Days or Greater [Member] | Multi-family [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] | Construction [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] | Construction [Member] | Land [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] | Construction [Member] | Farm [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] | Construction [Member] | Nonresidential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 267 |
90 Days or Greater [Member] | Construction [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] | Loans on deposits [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] | Home Equity [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  | 28
90 Days or Greater [Member] | Automobiles [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due |  |
90 Days or Greater [Member] | Unsecured [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due | 55 |
Loans Not Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | 324,652 | 326,662
Loans Not Past Due [Member] | Land [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due |  | 909
Loans Not Past Due [Member] | Farm [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due |  | 1,169
Loans Not Past Due [Member] | Nonresidential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due |  | 33,468
Loans Not Past Due [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due |  | 696
Loans Not Past Due [Member] | One-to four-family [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | 248,897 | 249,772
Loans Not Past Due [Member] | Multi-family [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | 15,281 | 15,815
Loans Not Past Due [Member] | Construction [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | 12,082 | 12,670
Loans Not Past Due [Member] | Construction [Member] | Land [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | 1,075 |
Loans Not Past Due [Member] | Construction [Member] | Farm [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | 1,578 |
Loans Not Past Due [Member] | Construction [Member] | Nonresidential real estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | 32,187 |
Loans Not Past Due [Member] | Construction [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | 616 |
Loans Not Past Due [Member] | Loans on deposits [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | 813 | 819
Loans Not Past Due [Member] | Home Equity [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | 11,398 | 10,616
Loans Not Past Due [Member] | Automobiles [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | 116 | 117
Loans Not Past Due [Member] | Unsecured [Member] | Consumer and other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans Not Past Due | $ 609 | $ 571

X
- Definition Amount of financial receivable pass. + References No definition available. + Details
Name: | kffb_FinancialReceivablePass
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of financial receivables doubtful. + References No definition available. + Details
Name: | kffb_FinancialReceivablesDoubtfuls
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of financial receivables special mention. + References No definition available. + Details
Name: | kffb_FinancialReceivablesSpecialMention
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of financial receivables substandard. + References No definition available. + Details
Name: | kffb_FinancialReceivablesSubstandard
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of financing receivable not past due. + References No definition available. + Details
Name: | kffb_FinancingReceivablesRecordedInvestmentCurrent
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable past due. + References No definition available. + Details
Name: | kffb_FinancingReceivablesRecordedInvestmentPastDue
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_LoansAndLeasesReceivableGrossCarryingAmount1
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-14 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

X
- Details
Name: | us-gaap_CollateralAxis=kffb_NonresidentialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=kffb_ResidentialRealEstateOneToFourFamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_ResidentialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=kffb_ResidentialRealEstateMultiFamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_CollateralAxis=kffb_ConsumerAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=kffb_HomeEquityLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=kffb_LoansNotPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |