Derivatives and Hedging Activities (Schedule of Effect of Derivative Instruments on Statement of Financial Condition Fair Value of Derivative Instruments) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Other Liabilities [Member]
Derivative [Line Items]
Derivatives designed as fair value hedging instruments under ASC 815 Interest rate contracts	$ 1,054
Other Assets [Member]
Derivative [Line Items]
Derivatives designed as fair value hedging instruments under ASC 815, interest rate contracts		650
Loan Subject to Fair Value Hedge [Member]
Derivative [Line Items]
Change in fair value of financial instrument being hedged under ASC 815 Interest rate contracts	$ 836	$ (452)