FEDERAL FUNDS PURCHASED (Additional Information) (Detail) $ in Millions	12 Months Ended
Sep. 30, 2018 USD ($)
Percentage Of Equity Capital	25.00%
Federal Funds Purchased Expiration Date1	Jun. 30, 2019
Discretionary Line Of Credit Facility [Member]
Federal Funds Purchased	$ 15
Line of Credit [Member]
Federal Funds Purchased	$ 20

Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13(1))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Name:	us-gaap_FederalFundsPurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant