XML 51 R40.htm IDEA: XBRL DOCUMENT
v3.20.4

Disclosures About Fair Value of Assets and Liabilities (Details) - Schedule of foregoing methods and assumptions, the carrying value and fair value - USD ($) $ in Thousands | Dec. 31, 2020 | Jun. 30, 2020
--- | --- | ---
Financial assets |  |
Federal Home Loan Bank stock | $ 6,498 | $ 6,498
Financial liabilities |  |
Advances by borrowers for taxes and insurance | 262 | 800
Total [Member] |  |
Financial assets |  |
Cash and cash equivalents | 14,730 | 13,702
Term deposits in other financial institutions | 752 | 2,252
Available-for-sale securities | 36 | 541
Held-to-maturity securities | 550 | 611
Loans held for sale | 1,794 | 685
Loans receivable - net | 308,982 | 295,431
Federal Home Loan Bank stock |  |
Accrued interest receivable | 694 | 830
Financial liabilities |  |
Deposits | 216,951 | 213,118
Federal Home Loan Bank advances | 61,597 | 55,416
Advances by borrowers for taxes and insurance | 262 | 800
Accrued interest payable | 20 | 27
Carrying Value [Member] |  |
Financial assets |  |
Cash and cash equivalents | 14,730 | 13,702
Term deposits in other financial institutions | 745 | 2,229
Available-for-sale securities | 36 | 541
Held-to-maturity securities | 534 | 598
Loans held for sale | 1,730 | 667
Loans receivable - net | 296,264 | 285,887
Federal Home Loan Bank stock | 6,498 | 6,498
Accrued interest receivable | 694 | 830
Financial liabilities |  |
Deposits | 216,298 | 212,273
Federal Home Loan Bank advances | 61,048 | 54,715
Advances by borrowers for taxes and insurance | 262 | 800
Accrued interest payable | 20 | 27
Level 1 [Member] |  |
Financial assets |  |
Cash and cash equivalents | 14,730 | 13,702
Term deposits in other financial institutions | 752 | 2,252
Available-for-sale securities |  |
Held-to-maturity securities |  |
Loans held for sale |  |
Loans receivable - net |  |
Federal Home Loan Bank stock |  |
Accrued interest receivable |  |
Financial liabilities |  |
Deposits | 91,883 | 78,118
Federal Home Loan Bank advances |  |
Advances by borrowers for taxes and insurance |  |
Accrued interest payable |  |
Level 2 [Member] |  |
Financial assets |  |
Cash and cash equivalents |  |
Term deposits in other financial institutions |  |
Available-for-sale securities | 36 | 541
Held-to-maturity securities | 550 | 611
Loans held for sale |  | 685
Loans receivable - net |  |
Federal Home Loan Bank stock |  |
Accrued interest receivable | 694 | 830
Financial liabilities |  |
Deposits | 125,068 | 135,000
Federal Home Loan Bank advances | 61,597 | 55,416
Advances by borrowers for taxes and insurance | 262 | 800
Accrued interest payable | 20 | 27
Level 3 [Member] |  |
Financial assets |  |
Cash and cash equivalents |  |
Term deposits in other financial institutions |  |
Available-for-sale securities |  |
Held-to-maturity securities |  |
Loans held for sale | 1,794 |
Loans receivable - net | 308,982 | 295,431
Federal Home Loan Bank stock |  |
Accrued interest receivable |  |
Financial liabilities |  |
Federal Home Loan Bank advances |  |
Advances by borrowers for taxes and insurance |  |
Accrued interest payable |  |

X
- References No definition available. + Details
Name: | kffb_AccruedInterestReceivable
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits. + References No definition available. + Details
Name: | kffb_DepositFairValueDisclosure
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

X
- References No definition available. + Details
Name: | kffb_TimeDepositsInOtherFinancialInstitutions
Namespace Prefix: | kffb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of trade and related party payables and accrued expenses. + References No definition available. + Details
Name: | us-gaap_AccountsPayableAndAccruedLiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of accumulated prepayments received by financial institutions from borrowers for taxes (for example, property taxes) and insurance (for example, property and catastrophe) which will periodically be remitted to the appropriate governmental agency or vendor on behalf of the borrower. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_AdvancePaymentsByBorrowersForTaxesAndInsurance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
Name: | us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of borrowing from Federal Home Loan Bank (FHLBank). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(3)(a)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 325 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=75031641&loc=d3e63345-112809 + Details
Name: | us-gaap_FederalHomeLoanBankStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables. + References No definition available. + Details
Name: | us-gaap_LoansHeldForSaleFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
Name: | us-gaap_LoansReceivableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of securitized, pay-through debt securities collateralized by real estate mortgage loans classified as available-for-sale. + References No definition available. + Details
Name: | us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of securitized, pay-through debt securities collateralized by real estate mortgage loans classified as held-to-maturity. + References No definition available. + Details
Name: | us-gaap_MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AssetsTotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |