Disclosures About Fair Value of Assets and Liabilities - Fair Value Measurement of Assets Recognized on Nonrecurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Jun. 30, 2012
Fair value measurements of assets recognized on a nonrecurring basis
Impaired loans (collateral-dependent)	$ 886	$ 2,438
Foreclosed assets	167	279
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value measurements of assets recognized on a nonrecurring basis
Impaired loans (collateral-dependent)
Foreclosed assets
Significant Other Observable Inputs (Level 2) [Member]
Fair value measurements of assets recognized on a nonrecurring basis
Impaired loans (collateral-dependent)
Foreclosed assets
Significant Unobservable Inputs (Level 3) [Member]
Fair value measurements of assets recognized on a nonrecurring basis
Impaired loans (collateral-dependent)	886	2,438
Foreclosed assets	$ 167	$ 279