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Activity in Valuation Allowance for Mortgage Servicing Rights (Detail) (USD $)
12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]      
Balance, beginning of period $ (304,001)      
Impairment charges (698,468) (1,183,799)   
Impairment recoveries 185,988 879,798   
Balance, end of period $ (816,481) $ (304,001)