Fair Value Measurements and Disclosures about Fair Value of Financial Instruments (Additional Information) (Detail) - USD ($)	3 Months Ended	9 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2014
Foreclosed Real Estate Expense	$ 80,000	$ 33,000	$ 181,000
Impaired Loans [Member]
Provision for Loan Losses Expensed		$ 49,000	$ 2,000
Impaired Loans [Member] | Maximum [Member]
Fair Value Inputs, Discount Rate		15.00%
Impaired Loans [Member] | Minimum [Member]
Fair Value Inputs, Discount Rate		0.00%
Collateral [Member] | Maximum [Member]
Fair Value Inputs, Discount Rate		6.00%
Collateral [Member] | Minimum [Member]
Fair Value Inputs, Discount Rate		0.00%
Foreclosed Real Estate Held [Member] | Maximum [Member]
Fair Value Inputs, Discount Rate		56.50%		50.00%
Foreclosed Real Estate Held [Member] | Minimum [Member]
Fair Value Inputs, Discount Rate		15.00%		13.30%
Foreclosed Real Estate Held [Member] | Weighted Average [Member]
Fair Value Inputs, Discount Rate		21.30%		18.70%