Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Definition

Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value.

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- Definition

Amount of expense recognized during the period for the foreclosure on real estate assets.

+ References

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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, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016
Foreclosed Real Estate Expense	$ 3,000	$ 21,000	$ 13,000	$ 100,000
Impaired Loans [Member]
Foreclosed Real Estate Expense	$ 139,000	$ 3,000	$ 181,000	$ 3,000
Maximum [Member] \| Foreclosed Real Estate Held [Member]
Fair Value Inputs, Discount Rate			34.20%		34.20%
Maximum [Member] \| Collateral [Member]
Fair Value Inputs, Discount Rate					6.00%
Maximum [Member] \| Impaired Loans [Member]
Fair Value Inputs, Discount Rate			15.00%
Maximum [Member] \| Loan Servicing Rights [Member]
Fair Value Inputs, Discount Rate			12.93%		14.46%
Fair Value Inputs, Prepayment Rate			8.78%		8.71%
Minimum [Member] \| Foreclosed Real Estate Held [Member]
Fair Value Inputs, Discount Rate			16.10%		15.00%
Minimum [Member] \| Collateral [Member]
Fair Value Inputs, Discount Rate					0.00%
Minimum [Member] \| Impaired Loans [Member]
Fair Value Inputs, Discount Rate			0.00%
Minimum [Member] \| Loan Servicing Rights [Member]
Fair Value Inputs, Discount Rate			8.41%		8.54%
Fair Value Inputs, Prepayment Rate			3.34%		4.25%
Weighted Average [Member] \| Foreclosed Real Estate Held [Member]
Fair Value Inputs, Discount Rate			28.60%		24.60%
Weighted Average [Member] \| Loan Servicing Rights [Member]
Fair Value Inputs, Discount Rate			11.41%		12.27%
Fair Value Inputs, Prepayment Rate			6.81%		6.75%