Employee Benefit Plans - Supplemental Retirement Benefits - Narrative (Detail) (Supplemental Retirement Benefits, Officers and Directors, USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Supplemental Retirement Benefits | Officers and Directors
Deferred Compensation Plans [Line Items]
Supplemental retirement benefit expense	$ 246,000	$ 306,000	$ 382,000
Liability account for supplemental retirement agreements	$ 2,300,000	$ 3,300,000