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Loans Receivable, Net and Related Allowance for Credit Losses (Details) - Schedule of Non-Accrual Loans Related Allowance for Credit Loss by Loan - USD ($) $ in Thousands	Dec. 31, 2023	Sep. 30, 2023
Non-Accrual [Member]
Financing Receivable, Nonaccrual [Line Items]
Total	$ 4,851	$ 5,084
Allowance for Credit Loss [Member]
Financing Receivable, Nonaccrual [Line Items]
Total
Specific Reserve [Member]
Financing Receivable, Nonaccrual [Line Items]
Total
One-to-Four Family Residential [Member] | Non-Accrual [Member]
Financing Receivable, Nonaccrual [Line Items]
One-to four-family residential	152	386
One-to-Four Family Residential [Member] | Allowance for Credit Loss [Member]
Financing Receivable, Nonaccrual [Line Items]
One-to four-family residential
One-to-Four Family Residential [Member] | Specific Reserve [Member]
Financing Receivable, Nonaccrual [Line Items]
One-to four-family residential
Commercial Real Estate [Member] | Non-Accrual [Member]
Financing Receivable, Nonaccrual [Line Items]
Commercial real estate	2,225	2,224
Commercial Real Estate [Member] | Allowance for Credit Loss [Member]
Financing Receivable, Nonaccrual [Line Items]
Commercial real estate
Commercial Real Estate [Member] | Specific Reserve [Member]
Financing Receivable, Nonaccrual [Line Items]
Commercial real estate
Construction Loans [Member] | Non-Accrual [Member]
Financing Receivable, Nonaccrual [Line Items]
Construction and land	2,474	2,474
Construction Loans [Member] | Allowance for Credit Loss [Member]
Financing Receivable, Nonaccrual [Line Items]
Construction and land
Construction Loans [Member] | Specific Reserve [Member]
Financing Receivable, Nonaccrual [Line Items]
Construction and land
Home Equity Loan [Member] | Non-Accrual [Member]
Financing Receivable, Nonaccrual [Line Items]
Home equity lines of credit
Home loans and lines of credit
Home Equity Loan [Member] | Allowance for Credit Loss [Member]
Financing Receivable, Nonaccrual [Line Items]
Home loans and lines of credit
Home Equity Loan [Member] | Specific Reserve [Member]
Financing Receivable, Nonaccrual [Line Items]
Home equity lines of credit
Commercial Loan [Member] | Non-Accrual [Member]
Financing Receivable, Nonaccrual [Line Items]
Commercial business
Commercial Loan [Member] | Allowance for Credit Loss [Member]
Financing Receivable, Nonaccrual [Line Items]
Commercial business
Commercial Loan [Member] | Specific Reserve [Member]
Financing Receivable, Nonaccrual [Line Items]
Commercial business
Other [Member] | Non-Accrual [Member]
Financing Receivable, Nonaccrual [Line Items]
Other
Other [Member] | Specific Reserve [Member]
Financing Receivable, Nonaccrual [Line Items]
Other

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