XML 61 R44.htm IDEA: XBRL DOCUMENT v3.7.0.1

Loans (Details 1) - USD ($) $ in Thousands		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated		$ 3,837	$ 3,400
Loans individually evaluated for impairment, Acquired with deteriorated credit quality	[1]	1,676	2,310
Loans individually evaluated for impairment, Total allowance
Loans collectively evaluated for impairment, Total allowance		1,533	1,515
Allowance for loan losses		1,533	1,515	$ 1,568
Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Ending loans balance
Loans collectively evaluated for impairment, Ending loans balance		1,333	1,315
Allowance for loan losses		1,333	1,315
Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Ending loans balance		5,513	5,710
Loans collectively evaluated for impairment, Ending loans balance		254,518	239,278
Allowance for loan losses		260,031	244,988
Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Total allowance
Loans collectively evaluated for impairment, Total allowance		200	200
Allowance for loan losses		200	200
One-to four-family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated		3,706	3,400
Loans individually evaluated for impairment, Acquired with deteriorated credit quality	[1]	1,676	2,146
Loans individually evaluated for impairment, Total allowance
Loans collectively evaluated for impairment, Total allowance		773	862
Allowance for loan losses		773	862	1,059
One-to four-family [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Ending loans balance
Loans collectively evaluated for impairment, Ending loans balance		773	862
One-to four-family [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Ending loans balance		5,382	5,546
Loans collectively evaluated for impairment, Ending loans balance		192,554	180,579
One-to four-family [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Total allowance
Loans collectively evaluated for impairment, Total allowance
Residential real estate, Multi-family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance		243	192
Allowance for loan losses		243	192	94
Residential real estate, Multi-family [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		243	192
Residential real estate, Multi-family [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		15,678	15,559
Residential real estate, Multi-family [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance
Residential real estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance		6	5
Allowance for loan losses		6	5	21
Residential real estate Construction [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		6	5
Residential real estate Construction [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		2,398	2,809
Residential real estate Construction [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance
Land [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance		4	2
Allowance for loan losses		4	2	7
Land [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		4	2
Land [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		1,304	1,186
Land [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance
Farm [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance		9	3
Allowance for loan losses		9	3	9
Farm [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		9	3
Farm [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		2,062	1,735
Farm [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance
Nonresidential real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated		131
Loans individually evaluated for impairment, Acquired with deteriorated credit quality	[1]		164
Loans individually evaluated for impairment, Total allowance
Loans collectively evaluated for impairment, Total allowance		270	217
Nonresidential real estate [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Ending loans balance
Loans collectively evaluated for impairment, Ending loans balance		270	217
Nonresidential real estate [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Ending loans balance		131	164
Loans collectively evaluated for impairment, Ending loans balance		29,080	26,974
Nonresidential real estate [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Total allowance
Loans collectively evaluated for impairment, Total allowance
Commercial and industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Ending loans balance		6
Loans collectively evaluated for impairment, Ending loans balance			18
Allowance for loan losses		6	18	10
Commercial and industrial [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Ending loans balance		6
Loans collectively evaluated for impairment, Ending loans balance			18
Commercial and industrial [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Ending loans balance		2,540
Loans collectively evaluated for impairment, Ending loans balance			1,847
Commercial and industrial [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Ending loans balance
Loans collectively evaluated for impairment, Ending loans balance
Loans on deposits [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance		4	4
Allowance for loan losses		4	4	13
Loans on deposits [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		4	4
Loans on deposits [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		1,607	1,813
Loans on deposits [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance
Home equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance		17	11
Allowance for loan losses		17	11	31
Home equity [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		17	11
Home equity [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		6,853	6,155
Home equity [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance
Unsecured [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance		1	1
Allowance for loan losses		1	1	3
Unsecured [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		1	1
Unsecured [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		400	552
Unsecured [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance		200	200
Allowance for loan losses		200	200	200
Unallocated [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
Unallocated [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
Unallocated [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance		200	200
Automobile [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance
Allowance for loan losses
Automobile [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
Automobile [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance		42	69
Automobile [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Total allowance
[1] These loans were evaluated at acquisition date at their estimated fair value and there has been no subsequent deterioration since acquisition.

X

- Definition

The balance of financing receivables that were acquired with deteriorated credit quality.

+ References

No definition available.

+ Details

Name:	kffb_FinancingReceivablesAcquiredWithDeterioratedCreditQuality
Namespace Prefix:	kffb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

No definition available.

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

Name:	us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

Name:	us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.1)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

+ Details

Name:	us-gaap_LoansAndLeasesReceivableAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	kffb_FinancingReceivableAllowanceForCreditLossesAxis=kffb_EndingAllowanceAttributedToLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	kffb_FinancingReceivableAllowanceForCreditLossesAxis=kffb_EndingLoansBalanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	kffb_FinancingReceivableAllowanceForCreditLossesAxis=kffb_UnallocatedAllowanceMember
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=kffb_ResidentialRealEstateConstructionMember
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_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_CommercialsAndIndustrialMember
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_HomeEquityMember
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:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=kffb_UnallocatedLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_AutomobilesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: