INVESTMENT SECURITIES (Additional Information) (Detail) - USD ($)	12 Months Ended
Sep. 30, 2016	Sep. 30, 2015
Schedule of Available-for-sale Securities [Line Items]
Trading account securities	$ 9,255,000	$ 9,044,000
Net gain on trading account securities	748,000	440,000
Net realized gain on trading account securities	795,000	394,000
Unrealized gains on trading account securities	$ 47,000	$ 46,000
Weighted Average Yield Of Available For Sale Securities In Loss Positions	1.87%
Weighted Average Coupon Rate Available For Sale Securities In Loss Positions	2.96%
Investments, Fair Value Disclosure	$ 66,000
Unrealized Loss on Securities	$ 7,000
Two Privately Issued Asset Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale debt securities in loss position, depreciation percentage	9.59%
Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale debt securities in loss position, depreciation percentage	0.78%
Debt Securities [Member] \| Downgraded Due To Potential Credit Losses [Member]
Schedule of Available-for-sale Securities [Line Items]
Carrying Value Of Downgraded Due To Potential Credit Losses	$ 2,000,000
Debt Securities [Member] \| Downgraded Privately Issued CMOs [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Market Value Of Downgraded Privately Issued Collateralized Mortgage Obligations	$ 2,800,000

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

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