Loans - Schedule of Loan Balances (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Sep. 30, 2014		Jun. 30, 2014		Sep. 30, 2013	Jun. 30, 2013
Loans Receivable [Line Items]
Total loans	$ 509,280		$ 510,648
Net deferred loan costs	2,634		2,638
Allowance for loan losses	(5,769)		(5,651)		(5,477)	(5,414)
Total loans, net	506,145		507,635
Percent			100.00%
Loans held for sale	1,384		330
Loans Receivable
Loans Receivable [Line Items]
Percent	100.00%
First Lien
Loans Receivable [Line Items]
Total loans	35,451		36,299
Second Lien
Loans Receivable [Line Items]
Total loans	41,813		39,845
Mortgage Loans on Real Estate
Loans Receivable [Line Items]
Total loans	425,134		424,388
Percent			83.11%
Change	746
% Change	0.20%
Mortgage Loans on Real Estate | Loans Receivable
Loans Receivable [Line Items]
Percent	83.48%
One- to Four-Family
Loans Receivable [Line Items]
Total loans	107,497	[1]	107,498	[1]
Allowance for loan losses	(831)		(697)		(762)	(762)
Percent			21.05%	[1]
Change	(1)	[1]
% Change	0.00%	[1]
One- to Four-Family | Loans Receivable
Loans Receivable [Line Items]
Percent	21.11%	[1]
Commercial
Loans Receivable [Line Items]
Total loans	202,178		200,750
Allowance for loan losses	(2,416)		(2,288)		(2,301)	(2,215)
Percent			39.31%
Change	1,428
% Change	0.70%
Commercial | Loans Receivable
Loans Receivable [Line Items]
Percent	39.70%
Home equity: | First Lien
Loans Receivable [Line Items]
Total loans	35,451		36,299
Allowance for loan losses	(238)		(204)		(234)	(233)
Percent			7.11%
Change	(848)
% Change	(2.30%)
Home equity: | First Lien | Loans Receivable
Loans Receivable [Line Items]
Percent	6.96%
Home equity: | Second Lien
Loans Receivable [Line Items]
Total loans	41,813		39,845
Allowance for loan losses	(331)		(268)		(302)	(302)
Percent			7.80%
Change	1,968
% Change	4.90%
Home equity: | Second Lien | Loans Receivable
Loans Receivable [Line Items]
Percent	8.21%
Residential Construction
Loans Receivable [Line Items]
Total loans	3,790		3,807
Allowance for loan losses	(32)		(30)		(33)	(33)
Percent			0.75%
Change	(17)
% Change	(0.40%)
Residential Construction | Loans Receivable
Loans Receivable [Line Items]
Percent	0.74%
Commercial Construction
Loans Receivable [Line Items]
Total loans	34,405		36,189
Allowance for loan losses	(472)		(472)		(315)	(315)
Percent			7.09%
Change	(1,784)
% Change	(4.90%)
Commercial Construction | Loans Receivable
Loans Receivable [Line Items]
Percent	6.76%
Other Loan [Member]
Loans Receivable [Line Items]
Total loans	84,146		86,260
Percent			16.89%
Change	(2,114)
% Change	(2.50%)
Other Loan [Member] | Loans Receivable
Loans Receivable [Line Items]
Percent	16.52%
Commercial
Loans Receivable [Line Items]
Total loans	52,399		54,756
Allowance for loan losses	(868)		(1,216)		(1,066)	(1,065)
Percent			10.72%
Change	(2,357)
% Change	(4.30%)
Commercial | Loans Receivable
Loans Receivable [Line Items]
Percent	10.29%
Manufactured homes
Loans Receivable [Line Items]
Total loans	22,157		21,766
Allowance for loan losses	(518)		(417)		(396)	(432)
Percent			4.26%
Change	391
% Change	1.80%
Manufactured homes | Loans Receivable
Loans Receivable [Line Items]
Percent	4.35%
Automobile and other secured loans
Loans Receivable [Line Items]
Total loans	6,680		7,172
Allowance for loan losses	(30)		(30)		(34)	(34)
Percent			1.40%
Change	(492)
% Change	(6.90%)
Automobile and other secured loans | Loans Receivable
Loans Receivable [Line Items]
Percent	1.31%
Other
Loans Receivable [Line Items]
Total loans	2,910		2,566
Allowance for loan losses	(33)		(29)		(34)	(23)
Percent			0.50%
Change	$ 344
% Change	13.40%
Other | Loans Receivable
Loans Receivable [Line Items]
Percent	0.57%

[1] Excludes loans held for sale of $1.4 million and $330,000 at September 30, 2014 and June 30, 2014, respectively.