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Mortgage Banking Activities - Activity in Valuation Allowance for Mortgage Servicing Rights (Detail) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Mortgage Loan Activity [Line Items]
Balance, beginning of period	$ (1,582,339)	$ (987,077)	$ (816,481)	$ (304,001)
Impairment charges			(765,858)	(698,468)
Impairment recoveries	230,311	102,773	230,311	118,165
Balance, end of period	$ (1,352,028)	$ (884,304)	$ (1,352,028)	$ (884,304)

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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- Definition

Reflects the estimated amount of impairment as of the balance sheet date of recognized servicing assets that are being amortized in proportion to and over the period of estimated net servicing income or loss.

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