Fair Value of Assets and Liabilities - Narrative (Detail) (Fair Value, Measurements, Nonrecurring, Level 3, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount percentage from tax assessment for underlying collateral of impaired loans	20.00%
Discount percentage from realtor's market analysis or listing price for underlying collateral of impaired loans	10.00%
Realtor commission percentage deducted from market analysis or listing price for underlying collateral of impaired loans	5.00%
Fair value, assets measured on nonrecurring basis, gain (loss) recognized in provision for loan losses	$ (49)
Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value, assets measured on nonrecurring basis, gain (loss) recognized in provision for loan losses	$ 44	$ (4)