LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of Loans Receivable, Net) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	$ 502,658	$ 473,991
Net deferred loan costs	145	177
Allowance for loan losses	(3,985)	(3,475)
Total loans receivable, net	498,818	470,693
One-to four-family residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	181,024	178,336
Allowance for loan losses	(534)	(587)
Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	216,058	207,118
Allowance for loan losses	(1,488)	(1,277)
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	29,663	22,622
Allowance for loan losses	(512)	(490)
Home equity lines of credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	19,232	18,536
Allowance for loan losses	(116)	(57)
Commercial business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	51,188	41,113
Allowance for loan losses	(1,177)	(956)
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	5,493	6,266
Allowance for loan losses	$ (4)	$ (6)

Amount of deferred costs incurred to originate loans and leases from face amounts of acquired loans.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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