Income Taxes - Reconciliation of Income Tax Expense at Statutory Rate (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Income Tax Rate Reconciliation [Line Items]
Computed at the statutory rate (34%)	$ 363	$ 550	$ 969	$ (235)
Decrease resulting from
Tax exempt interest	(4)	(14)	(9)	(27)
Cash surrender value of life insurance	(23)	(23)	(45)	(45)
State income taxes	53	52	174	(22)
Other	(29)	31	(82)	(10)
Actual expense (benefit)	$ 360	$ 596	$ 1,007	$ (339)