Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Non-Recurring Basis (Detail) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Impaired loans	$ 15,169,270
Other real estate owned	5,880,009
Impaired mortgage servicing rights	$ 7,315,637	$ 7,777,979
Valuation Techniques	Discounted Cash Flow
Unobservable Inputs	Discount Rate
Mortgage servicing rights fair value disclosure range maximum
Impaired Loans [Member]
Valuation Techniques	Appraisal value - sales comparison approach
Unobservable Inputs	Adjustment by management to reflect current conditions and selling costs
Impaired loans fair value disclosure range minimum	9.00%
Impaired loans fair value disclosure range maximum	19.00%
Real Estate Owned [Member]
Valuation Techniques	Appraisal value - sales comparison approach
Unobservable Inputs	Adjustment by management to reflect current conditions and selling costs
Impaired loans fair value disclosure range minimum	9.00%
Impaired loans fair value disclosure range maximum	19.00%