Loans Receivable (Details 2) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Automobile [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	$ 30	$ 63
Loans collectively evaluated for impairment, Ending allowance attributed to loans
Loans collectively evaluated for impairment, Unallocated allowance
Loans collectively evaluated for impairment, Total allowance
Farm [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Loans Individually evaluated	310	310
Loans individually evaluated for impairment, Loans acquired with deteriorated credit quality
Loans individually evaluated for impairment, Ending loans balance	310	310
Loans individually evaluated for impairment, Total allowance
Loans collectively evaluated for impairment, Ending loans balance	1,901	1,985
Loans collectively evaluated for impairment, Ending allowance attributed to loans	5	6
Loans collectively evaluated for impairment, Unallocated allowance
Loans collectively evaluated for impairment, Total allowance	5	6
Nonresidential real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Loans Individually evaluated	696	122
Loans individually evaluated for impairment, Loans acquired with deteriorated credit quality
Loans individually evaluated for impairment, Ending loans balance	696	122
Loans individually evaluated for impairment, Total allowance
Loans collectively evaluated for impairment, Ending loans balance	30,789	32,291
Loans collectively evaluated for impairment, Ending allowance attributed to loans	346	321
Loans collectively evaluated for impairment, Unallocated allowance
Loans collectively evaluated for impairment, Total allowance	346	321
Commercial non-mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	2,167	1,917
Loans collectively evaluated for impairment, Ending allowance attributed to loans	3	3
Loans collectively evaluated for impairment, Unallocated allowance
Loans collectively evaluated for impairment, Total allowance	3	3
Loans on deposits [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	1,535	1,470
Loans collectively evaluated for impairment, Ending allowance attributed to loans	3	3
Loans collectively evaluated for impairment, Unallocated allowance
Loans collectively evaluated for impairment, Total allowance	3	3
Home equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	8,227	7,603
Loans collectively evaluated for impairment, Ending allowance attributed to loans	13	13
Loans collectively evaluated for impairment, Unallocated allowance
Loans collectively evaluated for impairment, Total allowance	13	13
Unsecured [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	467	508
Loans collectively evaluated for impairment, Ending allowance attributed to loans	1	1
Loans collectively evaluated for impairment, Unallocated allowance
Loans collectively evaluated for impairment, Total allowance	1	1
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
Loans collectively evaluated for impairment, Ending allowance attributed to loans
Loans collectively evaluated for impairment, Unallocated allowance	200	200
Loans collectively evaluated for impairment, Total allowance	200	200
One-to four-family residential real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Loans Individually evaluated	4,332	2,977
Loans individually evaluated for impairment, Loans acquired with deteriorated credit quality	993	1,138
Loans individually evaluated for impairment, Ending loans balance	5,325	4,115
Loans individually evaluated for impairment, Total allowance
Loans collectively evaluated for impairment, Ending loans balance	205,153	202,793
Loans collectively evaluated for impairment, Ending allowance attributed to loans	734	795
Loans collectively evaluated for impairment, Unallocated allowance
Loans collectively evaluated for impairment, Total allowance	734	795
Multi-family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	15,217	15,113
Loans collectively evaluated for impairment, Ending allowance attributed to loans	220	225
Loans collectively evaluated for impairment, Unallocated allowance
Loans collectively evaluated for impairment, Total allowance	220	225
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	2,154	2,919
Loans collectively evaluated for impairment, Ending allowance attributed to loans	3	8
Loans collectively evaluated for impairment, Unallocated allowance
Loans collectively evaluated for impairment, Total allowance	3	8
Land [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	669	677
Loans collectively evaluated for impairment, Ending allowance attributed to loans	1	1
Loans collectively evaluated for impairment, Unallocated allowance
Loans collectively evaluated for impairment, Total allowance	1	1
Loans individually evaluated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Total	5,338	3,409
Loans acquired with deteriorated credit quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Total	993	1,138
Unpaid principal balance and recorded investment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Total	6,331	4,547
Loans collectively evaluated for impairment, Total	268,309	267,339
Evaluated for impairment, Total	274,640	271,886
Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Total
Loans collectively evaluated for impairment, Total	1,329	1,376
Evaluated for impairment, Total	1,329	1,376
Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Total
Loans collectively evaluated for impairment, Total	200	200
Evaluated for impairment, Total	200	200
Total allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Total
Loans collectively evaluated for impairment, Total	1,529	1,576
Evaluated for impairment, Total	$ 1,529	$ 1,576

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

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Loans collectively evaluated for impairment Ending allowance attributed to loans.

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Loans collectively evaluated for impairment.

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Loans collectively evaluated for impairment Unallocated allowance.

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Loans individually evaluated for impairment total.

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- 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.

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 310
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-Paragraph 11B
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 15
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