Loans and Allowance for Loan Losses - Allowance for Loan Losses and Recorded Investment in Loans Based on Portfolio Segment and Impairment Method (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Allowance for loan losses:
Balance, beginning of year	$ 3,958	$ 3,938
Provision charged to expense	460	502
Losses charged off	(278)	(538)
Recoveries	71	56
Balance, end of period	4,211	3,958
Ending balance: individually evaluated for impairment	91	215
Ending balance: collectively evaluated for impairment	4,120	3,743
Loans:
Ending balance	361,253	335,311
Ending balance: individually evaluated for impairment	4,907	4,545
Ending balance: collectively evaluated for impairment	356,346	330,766
Commercial [Member]
Allowance for loan losses:
Balance, beginning of year	968	838
Provision charged to expense	278	158
Losses charged off		(28)
Balance, end of period	1,246	968
Ending balance: individually evaluated for impairment	25	35
Ending balance: collectively evaluated for impairment	1,221	933
Loans:
Ending balance	103,614	83,134
Ending balance: individually evaluated for impairment	46	55
Ending balance: collectively evaluated for impairment	103,568	83,079
One-to Four-Family [Member]
Allowance for loan losses:
Balance, beginning of year	1,391	1,616
Provision charged to expense	27	143
Losses charged off	(231)	(418)
Recoveries	29	50
Balance, end of period	1,216	1,391
Ending balance: individually evaluated for impairment	57	143
Ending balance: collectively evaluated for impairment	1,159	1,248
Loans:
Ending balance	145,064	149,549
Ending balance: individually evaluated for impairment	3,274	2,781
Ending balance: collectively evaluated for impairment	141,790	146,768
Multi-Family [Member]
Allowance for loan losses:
Balance, beginning of year	842	797
Provision charged to expense	(15)	45
Balance, end of period	827	842
Ending balance: collectively evaluated for impairment	827	842
Loans:
Ending balance	58,399	61,603
Ending balance: individually evaluated for impairment	1,537	1,621
Ending balance: collectively evaluated for impairment	56,862	59,982
Home Equity Lines of Credit [Member]
Allowance for loan losses:
Balance, beginning of year	111	90
Provision charged to expense	(4)	37
Losses charged off	(35)	(16)
Recoveries	13
Balance, end of period	85	111
Ending balance: individually evaluated for impairment		21
Ending balance: collectively evaluated for impairment	85	90
Loans:
Ending balance	7,713	7,824
Ending balance: individually evaluated for impairment	8	28
Ending balance: collectively evaluated for impairment	7,705	7,796
Construction [Member]
Allowance for loan losses:
Balance, beginning of year	10	24
Provision charged to expense	(4)	(14)
Balance, end of period	6	10
Ending balance: collectively evaluated for impairment	6	10
Loans:
Ending balance	987	1,572
Ending balance: collectively evaluated for impairment	987	1,572
Commercial [Member]
Allowance for loan losses:
Balance, beginning of year	543	431
Provision charged to expense	201	150
Losses charged off		(38)
Balance, end of period	744	543
Ending balance: collectively evaluated for impairment	744	543
Loans:
Ending balance	37,151	23,120
Ending balance: individually evaluated for impairment	21	29
Ending balance: collectively evaluated for impairment	37,130	23,091
Consumer [Member]
Allowance for loan losses:
Balance, beginning of year	93	104
Provision charged to expense	(23)	21
Losses charged off	(12)	(38)
Recoveries	29	6
Balance, end of period	87	93
Ending balance: individually evaluated for impairment	9	16
Ending balance: collectively evaluated for impairment	78	77
Loans:
Ending balance	8,325	8,509
Ending balance: individually evaluated for impairment	21	31
Ending balance: collectively evaluated for impairment	$ 8,304	8,478
Unallocated [Member]
Allowance for loan losses:
Balance, beginning of year		38
Provision charged to expense		$ (38)