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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of Average Recorded Investment in Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Financing Receivable, Impaired [Line Items]
Average investment in impaired loans	$ 8,114	$ 12,275	$ 8,911	$ 12,582
One-to four-family residential [Member]
Financing Receivable, Impaired [Line Items]
Average investment in impaired loans	1,531	2,425	1,760	2,409
Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Average investment in impaired loans	1,174	3,407	1,516	3,716
Construction [Member]
Financing Receivable, Impaired [Line Items]
Average investment in impaired loans	4,580	4,580	4,580	4,580
Commercial business [Member]
Financing Receivable, Impaired [Line Items]
Average investment in impaired loans	$ 829	$ 1,863	$ 1,055	$ 1,877

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524

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