Loans and Allowance for Loan Losses - Non Accruals (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Mortgages on real estate:
Total	$ 1,789	$ 2,177
One- to Four-Family [Member]
Mortgages on real estate:
Total	1,514	1,604
Multi-Family [Member]
Mortgages on real estate:
Total	155	185
Home Equity Lines of Credit [Member]
Mortgages on real estate:
Total		316
Commercial [Member]
Mortgages on real estate:
Total	27	63
Commercial [Member]
Mortgages on real estate:
Total	$ 93	$ 9

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5111-111524

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