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Loans Receivable (Details 2) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Jun. 30, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated
Loans individually evaluated for impairment, Ending loans balance	4,697		$ 6,071
Loans collectively evaluated for impairment, Ending loans balance	1,554	1,533
Allowance for loan losses	1,554	1,553	1,476	$ 1,515
Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated
Loans collectively evaluated for impairment, Ending loans balance	1,354	1,333
Allowance for loan losses	1,354	1,333
Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated		5,513
Loans collectively evaluated for impairment, Ending loans balance	254,859	254,518
Allowance for loan losses	259,417	260,031
Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated
Loans collectively evaluated for impairment, Ending loans balance	200	200
Allowance for loan losses	200	200
One- to four-family residential real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated	3,195	3,837
Loans individually evaluated for impairment, Acquired with deteriorated credit quality	1,502	1,676
Loans individually evaluated for impairment, Ending loans balance
Loans collectively evaluated for impairment, Total allowance	774	773
Allowance for loan losses	774	773	803	862
One- to four-family residential real estate [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated
Loans collectively evaluated for impairment, Ending loans balance	774	773
One- to four-family residential real estate [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Ending loans balance	4,479	5,382
Loans collectively evaluated for impairment, Total allowance	191,800	192,554
One- to four-family residential real estate [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated
Loans collectively evaluated for impairment, Total allowance
Multi-family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated	3,326
Loans individually evaluated for impairment, Acquired with deteriorated credit quality	1,502
Loans individually evaluated for impairment, Ending loans balance	4,828
Loans collectively evaluated for impairment, Ending loans balance	243	243
Allowance for loan losses	243	243	208	192
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	243
Multi-family [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	15,067	15,678
Multi-family [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
Residential real estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	7	6
Allowance for loan losses	7	6	5	5
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	7	6
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	2,320	2,398
Residential real estate Construction [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
Land [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	2	4
Allowance for loan losses	2	4	2	2
Land [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	2	4
Land [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	901	1,304
Land [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
Farm [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	10	9
Allowance for loan losses	10	9	4	3
Farm [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	10	9
Farm [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	2,368	2,062
Farm [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
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
Loans individually evaluated for impairment, Total allowance
Loans collectively evaluated for impairment, Ending loans balance	284	270
Nonresidential real estate [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated
Loans collectively evaluated for impairment, Ending loans balance	284	270
Nonresidential real estate [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated		131
Loans collectively evaluated for impairment, Ending loans balance	30,973	29,080
Nonresidential real estate [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment, Individually evaluated
Loans collectively evaluated for impairment, Ending loans balance
Commercial non-mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	7	6
Commercial non-mortgage [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	7	6
Commercial non-mortgage [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	2,200	2,540
Commercial non-mortgage [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
Commercial and industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses	7	6	15	18
Loans on deposits [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	5	4
Allowance for loan losses	5	4	4	4
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	5	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	1,632	1,607
Loans on deposits [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
Home equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	20	17
Allowance for loan losses	20	17	12	11
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	20	17
Home equity [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	6,819	6,853
Home equity [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
Unsecured [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	2	1
Allowance for loan losses	2	1	1	1
Unsecured [Member] | Ending allowance attributed to loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	2	1
Unsecured [Member] | Ending loans balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	471	400
Unsecured [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance	200	200
Allowance for loan losses	200	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, Ending loans balance	200	200
Automobile [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance
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	38	42
Automobile [Member] | Unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for impairment, Ending loans balance

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- Definition

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

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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