Loans - Schedule of Allowance for Loan Losses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2014		Sep. 30, 2013	Jun. 30, 2014
Allowance:
Beginning balance	$ 5,651		$ 5,414
Charge-offs	(49)		(50)
Recoveries	17		13
Provision (credit)	150		100
Ending balance	5,769		5,477
Impaired loans	10			11
Non-impaired loans	5,759			5,640
Total allowance for loan losses	5,769		5,477
Loans:
Impaired loans	10,544			9,780
Non-impaired loans	498,736			500,868
Total loans	509,280			510,648
First Lien
Loans:
Total loans	35,451			36,299
Second Lien
Loans:
Total loans	41,813			39,845
One- to Four-Family
Allowance:
Beginning balance	697		762
Charge-offs	(26)		0
Recoveries	0		0
Provision (credit)	160		0
Ending balance	831		762
Impaired loans	0			0
Non-impaired loans	831			697
Total allowance for loan losses	831		762
Loans:
Impaired loans	2,977			2,755
Non-impaired loans	104,520			104,743
Total loans	107,497	[1]		107,498	[1]
Commercial
Allowance:
Beginning balance	2,288		2,215
Charge-offs	0		(4)
Recoveries	0		0
Provision (credit)	128		90
Ending balance	2,416		2,301
Impaired loans	10			11
Non-impaired loans	2,406			2,277
Total allowance for loan losses	2,416		2,301
Loans:
Impaired loans	3,963			3,684
Non-impaired loans	198,215			197,066
Total loans	202,178			200,750
Home equity: | First Lien
Allowance:
Beginning balance	204		233
Charge-offs	0		0
Recoveries	0		1
Provision (credit)	34		0
Ending balance	238		234
Impaired loans	0			0
Non-impaired loans	238			204
Total allowance for loan losses	238		234
Loans:
Impaired loans	0			0
Non-impaired loans	35,451			36,299
Total loans	35,451			36,299
Home equity: | Second Lien
Allowance:
Beginning balance	268		302
Charge-offs	(7)		0
Recoveries	1		0
Provision (credit)	69		0
Ending balance	331		302
Impaired loans	0			0
Non-impaired loans	331			268
Total allowance for loan losses	331		302
Loans:
Impaired loans	144			150
Non-impaired loans	41,669			39,695
Total loans	41,813			39,845
Residential Construction
Allowance:
Beginning balance	30		33
Charge-offs	0		0
Recoveries	0		0
Provision (credit)	2		0
Ending balance	32		33
Impaired loans	0			0
Non-impaired loans	32			30
Total allowance for loan losses	32		33
Loans:
Impaired loans	0			0
Non-impaired loans	3,790			3,807
Total loans	3,790			3,807
Commercial Construction
Allowance:
Beginning balance	472		315
Charge-offs	0		0
Recoveries	0		0
Provision (credit)	0		0
Ending balance	472		315
Impaired loans	0			0
Non-impaired loans	472			472
Total allowance for loan losses	472		315
Loans:
Impaired loans	275			0
Non-impaired loans	34,130			36,189
Total loans	34,405			36,189
Commercial
Allowance:
Beginning balance	1,216		1,065
Charge-offs	0		0
Recoveries	12		1
Provision (credit)	(360)		0
Ending balance	868		1,066
Impaired loans	0			0
Non-impaired loans	868			1,216
Total allowance for loan losses	868		1,066
Loans:
Impaired loans	3,031			2,952
Non-impaired loans	49,368			51,804
Total loans	52,399			54,756
Manufactured homes
Allowance:
Beginning balance	417		432
Charge-offs	(14)		(46)
Recoveries	0		0
Provision (credit)	115		10
Ending balance	518		396
Impaired loans	0			0
Non-impaired loans	518			417
Total allowance for loan losses	518		396
Loans:
Impaired loans	149			239
Non-impaired loans	22,008			21,527
Total loans	22,157			21,766
Automobile and other secured loans
Allowance:
Beginning balance	30		34
Charge-offs	0		0
Recoveries	4		0
Provision (credit)	(4)		0
Ending balance	30		34
Impaired loans	0			0
Non-impaired loans	30			30
Total allowance for loan losses	30		34
Loans:
Impaired loans	0			0
Non-impaired loans	6,680			7,172
Total loans	6,680			7,172
Other
Allowance:
Beginning balance	29		23
Charge-offs	(2)		0
Recoveries	0		11
Provision (credit)	6		0
Ending balance	33		34
Impaired loans	0			0
Non-impaired loans	33			29
Total allowance for loan losses	33		34
Loans:
Impaired loans	5			0
Non-impaired loans	2,905			2,566
Total loans	$ 2,910			$ 2,566

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