LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Loan Portfolio (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2024	Sep. 30, 2024
One-to-Four Family Residential [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024	$ 6,191	$ 32,624
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	32,205	42,084
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022	41,065	31,805
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021	31,565	25,970
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020	24,508	29,998
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	110,041	83,378
Revolving Loans Amortized Cost Basis	259	342
Revolving Loans Converted to Term
Total	245,834	246,201
One-to-Four Family Residential [Member] \| Revolving Credit Facility [Member]
One-to-four family residential
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
One-to-Four Family Residential [Member] \| Performing [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024	6,191	32,624
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	32,205	42,084
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022	41,065	31,711
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021	31,565	25,970
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020	24,508	29,976
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	110,020	83,378
Revolving Loans Amortized Cost Basis	259	342
Revolving Loans Converted to Term
Total	245,813	246,085
One-to-Four Family Residential [Member] \| Non-performing [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022		94
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020		22
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	21
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total	21	116
Commercial Real Estate [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024	27,362	88,597
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	88,039	84,674
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022	84,241	66,412
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021	65,951	64,573
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020	63,277	29,568
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	148,563	122,845
Revolving Loans Amortized Cost Basis	3,079	3,718
Revolving Loans Converted to Term	927	932
Total	481,439	461,319
Commercial Real Estate [Member] \| Revolving Credit Facility [Member]
One-to-four family residential
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Construction and Land [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024	150	5,650
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	8,430	10,061
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022	11,374
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020		1,156
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	5,238	4,069
Revolving Loans Amortized Cost Basis	800	1,786
Revolving Loans Converted to Term
Total	25,992	22,722
Construction and Land [Member] \| Revolving Credit Facility [Member]
One-to-four family residential
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Home Equity Loan [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024	30	1,585
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	1,563	1,561
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022	1,545	1,600
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021	1,581	309
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020	298	247
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	1,525	1,220
Revolving Loans Amortized Cost Basis	20,428	17,902
Revolving Loans Converted to Term	303	304
Total	27,273	24,728
Home Equity Loan [Member] \| Revolving Credit Facility [Member]
One-to-four family residential
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Home Equity Loan [Member] \| Performing [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024	30	1,585
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	1,563	1,561
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022	1,463	1,600
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021	1,581	309
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020	298	247
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	1,289	1,220
Revolving Loans Amortized Cost Basis	20,428	17,902
Revolving Loans Converted to Term	303	304
Total	26,955	24,728
Home Equity Loan [Member] \| Non-performing [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022	82
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	236
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total	318
Commercial Business [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024		2,062
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	1,748	507
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022	497	2,517
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021	2,343	2,298
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020	1,783	802
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	3,039	2,565
Revolving Loans Amortized Cost Basis	13,772	13,072
Revolving Loans Converted to Term	598	188
Total	23,780	24,011
Commercial Business [Member] \| Revolving Credit Facility [Member]
One-to-four family residential
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Other [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024	74	61
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	21
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022		47
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021	42
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020		9
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	1,773	1,771
Revolving Loans Amortized Cost Basis	342	347
Revolving Loans Converted to Term
Total	2,252	2,235
Other [Member] \| Revolving Credit Facility [Member]
One-to-four family residential
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Current period gross charge-offs
Other [Member] \| Performing [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024	74	61
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	21
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022		47
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021	42
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020		9
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	1,773	1,771
Revolving Loans Amortized Cost Basis	342	347
Revolving Loans Converted to Term
Total	2,252	2,235
Other [Member] \| Non-performing [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total
Pass [Member] \| Commercial Real Estate [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024	27,362	88,597
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	88,039	84,674
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022	84,241	66,412
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021	65,951	64,573
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020	63,277	29,568
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	148,441	122,605
Revolving Loans Amortized Cost Basis	3,079	3,718
Revolving Loans Converted to Term	927	932
Total	481,317	461,079
Pass [Member] \| Construction and Land [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024	150	5,650
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	8,430	10,061
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022	11,374
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020		1,156
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	5,238	4,069
Revolving Loans Amortized Cost Basis	800	1,786
Revolving Loans Converted to Term
Total	25,992	22,722
Pass [Member] \| Commercial Business [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024		2,062
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023	1,748	507
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022	497	2,517
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021	2,343	2,298
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020	1,783	802
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	3,039	2,565
Revolving Loans Amortized Cost Basis	13,772	13,072
Revolving Loans Converted to Term	598	188
Total	23,780	24,011
Special Mention [Member] \| Commercial Real Estate [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior	122	124
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total	122	124
Special Mention [Member] \| Construction and Land [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total
Special Mention [Member] \| Commercial Business [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total
Substandard [Member] \| Commercial Real Estate [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior		116
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total		116
Substandard [Member] \| Construction and Land [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total
Substandard [Member] \| Commercial Business [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total
Doubtful [Member] \| Commercial Real Estate [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total
Doubtful [Member] \| Construction and Land [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total
Doubtful [Member] \| Commercial Business [Member]
One-to-four family residential
Term Loans Amortized Cost Basis by Origination Fiscal Year 2025/ 2024
Term Loans Amortized Cost Basis by Origination Fiscal Year 2024/ 2023
Term Loans Amortized Cost Basis by Origination Fiscal Year 2023/ 2022
Term Loans Amortized Cost Basis by Origination Fiscal Year 2022/ 2021
Term Loans Amortized Cost Basis by Origination Fiscal Year 2021/ 2020
Term Loans Amortized Cost Basis by Origination Fiscal Year Prior
Revolving Loans Amortized Cost Basis
Revolving Loans Converted to Term
Total

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