XML 42 R32.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Loans Receivable (Details) - Schedule of principal balance outstanding in past due loans - USD ($) $ in Thousands | Dec. 31, 2021 | Jun. 30, 2021
--- | --- | ---
Residential real estate: |  |
Total Past Due | $ 4,010 | $ 4,278
Loans Not Past Due | 274,277 | 295,246
Total | 278,287 | 299,524
Farm [Member] |  |
Residential real estate: |  |
Total Past Due | 98 | 101
Loans Not Past Due | 2,176 | 2,133
Total | 2,274 | 2,234
Nonresidential real estate [Member] |  |
Residential real estate: |  |
Total Past Due | 336 | 241
Loans Not Past Due | 33,147 | 35,251
Total | 33,483 | 35,492
Commercial non-mortgage [Member] |  |
Residential real estate: |  |
Loans Not Past Due | 1,148 |
Total | 1,148 |
Loans on deposits [Member] |  |
Residential real estate: |  |
Total Past Due |  |
Loans Not Past Due | 997 | 1,129
Total | 997 | 1,129
Home Equity [Member] |  |
Residential real estate: |  |
Total Past Due | 147 | 116
Loans Not Past Due | 7,284 | 7,019
Total | 7,431 | 7,135
Automobiles [Member] |  |
Residential real estate: |  |
Total Past Due |  |
Loans Not Past Due | 94 | 75
Total | 94 | 75
Unsecured [Member] |  |
Residential real estate: |  |
Total Past Due | 2 | 4
Loans Not Past Due | 557 | 549
Total | 559 | 553
Commercial and industrial [Member] |  |
Residential real estate: |  |
Total Past Due |  | 6
Loans Not Past Due |  | 2,253
Total |  | 2,259
One-to four-family [Member] |  |
Residential real estate: |  |
Total Past Due | 3,415 | 3,730
Loans Not Past Due | 213,829 | 220,395
Total | 217,244 | 224,125
Multi-family [Member] |  |
Residential real estate: |  |
Total Past Due |  |
Loans Not Past Due | 11,865 | 19,781
Total | 11,865 | 19,781
Construction [Member] |  |
Residential real estate: |  |
Total Past Due | 12 | 80
Loans Not Past Due | 2,865 | 5,353
Total | 2,877 | 5,433
Land [Member] |  |
Residential real estate: |  |
Total Past Due |  |
Loans Not Past Due | 315 | 1,308
Total | 315 | 1,308
30-89 Days Past Due [Member] |  |
Residential real estate: |  |
Total Past Due | 2,410 | 2,699
30-89 Days Past Due [Member] | Farm [Member] |  |
Residential real estate: |  |
Total Past Due | 98 | 101
30-89 Days Past Due [Member] | Nonresidential real estate [Member] |  |
Residential real estate: |  |
Total Past Due | 99 |
30-89 Days Past Due [Member] | Loans on deposits [Member] |  |
Residential real estate: |  |
Total Past Due |  |
30-89 Days Past Due [Member] | Home Equity [Member] |  |
Residential real estate: |  |
Total Past Due | 76 | 116
30-89 Days Past Due [Member] | Automobiles [Member] |  |
Residential real estate: |  |
Total Past Due |  |
30-89 Days Past Due [Member] | Unsecured [Member] |  |
Residential real estate: |  |
Total Past Due | 2 | 4
30-89 Days Past Due [Member] | Commercial and industrial [Member] |  |
Residential real estate: |  |
Total Past Due |  | 6
30-89 Days Past Due [Member] | One-to four-family [Member] |  |
Residential real estate: |  |
Total Past Due | 2,123 | 2,392
30-89 Days Past Due [Member] | Multi-family [Member] |  |
Residential real estate: |  |
Total Past Due |  |
30-89 Days Past Due [Member] | Construction [Member] |  |
Residential real estate: |  |
Total Past Due | 12 | 80
30-89 Days Past Due [Member] | Land [Member] |  |
Residential real estate: |  |
Total Past Due |  |
90 Days or Greater Past Due [Member] |  |
Residential real estate: |  |
Total Past Due | 1,600 | 1,579
90 Days or Greater Past Due [Member] | Farm [Member] |  |
Residential real estate: |  |
Total Past Due |  |
90 Days or Greater Past Due [Member] | Nonresidential real estate [Member] |  |
Residential real estate: |  |
Total Past Due | 237 | 241
90 Days or Greater Past Due [Member] | Commercial non-mortgage [Member] |  |
Residential real estate: |  |
Total Past Due |  |
90 Days or Greater Past Due [Member] | Loans on deposits [Member] |  |
Residential real estate: |  |
Total Past Due |  |
90 Days or Greater Past Due [Member] | Home Equity [Member] |  |
Residential real estate: |  |
Total Past Due | 71 |
90 Days or Greater Past Due [Member] | Automobiles [Member] |  |
Residential real estate: |  |
Total Past Due |  |
90 Days or Greater Past Due [Member] | Unsecured [Member] |  |
Residential real estate: |  |
Total Past Due |  |
90 Days or Greater Past Due [Member] | Commercial and industrial [Member] |  |
Residential real estate: |  |
Total Past Due |  |
90 Days or Greater Past Due [Member] | One-to four-family [Member] |  |
Residential real estate: |  |
Total Past Due | 1,292 | 1,338
90 Days or Greater Past Due [Member] | Multi-family [Member] |  |
Residential real estate: |  |
Total Past Due |  |
90 Days or Greater Past Due [Member] | Construction [Member] |  |
Residential real estate: |  |
Total Past Due |  |
90 Days or Greater Past Due [Member] | Land [Member] |  |
Residential real estate: |  |
Total Past Due |  |

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
- References No definition available. + Details
Name: | kffb_ResidentialRealEstateAbstract0000000000000
Namespace Prefix: | kffb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=kffb_CommercialAndIndustrialMember
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=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: | us-gaap_FinancingReceivablesPeriodPastDueAxis=kffb_FinancingReceivables30To89DaysPastDueMember
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: |