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FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK - Schedule of Information Regarding Derivatives (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Mar. 31, 2026	Sep. 30, 2025
Customer Interest Rate Swaps [Member]
Classified in Other Assets:
Notional Amount	$ 45,215	$ 43,122
Average Maturity (Years)	3 years 2 months 12 days	3 years 7 months 6 days
Weighted Average Fixed Rate	5.77%	5.75%
Weighted Average Variable Rate	1 Mo. SOFR + 2.66	1 Mo. SOFR + 2.66
Fair Value	$ 594	$ 911
Classified in Other Assets [Member]
Classified in Other Assets:
Notional Amount	$ 45,215	$ 43,122
Average Maturity (Years)	3 years 2 months 12 days	3 years 7 months 6 days
Weighted Average Fixed Rate	5.77%	5.75%
Fair Value	$ 594	$ 911
3rd Party Interest Rate swaps [Member]
Classified in Other Assets:
Notional Amount	$ 45,215	$ 43,122
Average Maturity (Years)	3 years 2 months 12 days	3 years 7 months 6 days
Weighted Average Fixed Rate	5.77%	5.75%
Weighted Average Variable Rate	1 Mo. SOFR + 2.66	1 Mo. SOFR + 2.66
Fair Value	$ 594	$ 911
Classified in Other Liabilities [Member]
Classified in Other Assets:
Notional Amount	$ 45,215	$ 43,122
Average Maturity (Years)	3 years 2 months 12 days	3 years 7 months 6 days
Weighted Average Fixed Rate	5.77%	5.75%
Fair Value	$ 594	$ 911

X

- Definition

Weighted Average Variable Rate.

+ References

No definition available.

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- References

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- Definition

Average fixed interest rate related to the group of interest rate derivatives.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-5

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- Definition

Average period remaining until maturity of derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-5

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

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