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LOANS RECEIVABLE, NET (Schedule of Type of Loan) (Details) $ in Thousands		12 Months Ended
		Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loan		228	283
Balance		$ 122,813	$ 150,691
Weighted average interest rate		4.65%	4.67%
One-to four-family residential [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loan	[1]	75	94
Balance	[1]	$ 17,593	$ 24,573
Weighted average interest rate	[1]	4.09%	4.05%
Commercial real estate [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loan		122	145
Balance		$ 95,847	$ 115,358
Weighted average interest rate		4.69%	4.76%
Construction [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loan		3	4
Balance		$ 2,305	$ 2,630
Weighted average interest rate		3.53%	3.77%
Home equity lines of credit [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loan		6	8
Balance		$ 896	$ 1,238
Weighted average interest rate		4.33%	4.24%
Commercial business [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loan		22	32
Balance		$ 6,172	$ 6,892
Weighted average interest rate		6.06%	5.88%
[1] Includes home equity loans.

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+ References

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(3)(a))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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-Section 50
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