Investment Securities - Schedule of Amortized Cost and Estimated Fair Value (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014
Available for Sale
Amortized Cost	$ 131,392	$ 133,703
Gross Unrealized Gains	1,591	1,732
Gross Unrealized Losses	(1,748)	(1,499)
Fair Value	131,235	133,936
Held to Maturity
Amortized Cost	10,615	9,302
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	10,615	9,302
Debt securities
Available for Sale
Amortized Cost	131,341	133,652
Gross Unrealized Gains	1,564	1,704
Gross Unrealized Losses	(1,748)	(1,499)
Fair Value	131,157	133,857
Debt securities | Corporate bonds
Available for Sale
Amortized Cost	3,023	3,026
Gross Unrealized Gains	52	60
Gross Unrealized Losses	0	0
Fair Value	3,075	3,086
Debt securities | Agency
Available for Sale
Amortized Cost	126,711	128,938
Gross Unrealized Gains	1,495	1,629
Gross Unrealized Losses	(1,743)	(1,494)
Fair Value	126,463	129,073
Debt securities | Non-agency
Available for Sale
Amortized Cost	1,607	1,688
Gross Unrealized Gains	17	15
Gross Unrealized Losses	(5)	(5)
Fair Value	1,619	1,698
Debt securities | Municipal bonds
Held to Maturity
Amortized Cost	10,615	9,302
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	10,615	9,302
Marketable equity securities
Available for Sale
Amortized Cost	51	51
Gross Unrealized Gains	27	28
Gross Unrealized Losses	0	0
Fair Value	$ 78	$ 79