LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of ALL by Loan Category) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Sep. 30, 2019
Allowance for Loan Losses:
Balance - Allowance for loans losses	$ 5,525	$ 4,888
Individually evaluated for impairment	221
Collectively evaluated for impairment	5,304	4,888
Balance - Loans receivable	547,404	523,001
Loan balance individually evaluated for impairment	12,154	10,354
Loan balance collectively evaluated for impairment	535,250	512,647
One-to four-family residential [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	939	731
Individually evaluated for impairment
Collectively evaluated for impairment	939	731
Balance - Loans receivable	204,575	190,415
Loan balance individually evaluated for impairment	2,177	1,405
Loan balance collectively evaluated for impairment	202,398	189,010
Commercial real estate [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	2,376	2,066
Individually evaluated for impairment	46
Collectively evaluated for impairment	2,330	2,066
Balance - Loans receivable	245,860	232,544
Loan balance individually evaluated for impairment	3,367	4,593
Loan balance collectively evaluated for impairment	242,493	227,951
Construction [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	644	511
Individually evaluated for impairment	175
Collectively evaluated for impairment	469	511
Balance - Loans receivable	22,333	28,451
Loan balance individually evaluated for impairment	5,206	2,900
Loan balance collectively evaluated for impairment	17,127	25,551
Home equity lines of credit [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	182	138
Individually evaluated for impairment
Collectively evaluated for impairment	182	138
Balance - Loans receivable	22,170	17,832
Loan balance individually evaluated for impairment
Loan balance collectively evaluated for impairment	22,170	17,832
Commercial business [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	1,208	1,184
Individually evaluated for impairment
Collectively evaluated for impairment	1,208	1,184
Balance - Loans receivable	47,684	48,769
Loan balance individually evaluated for impairment	1,404	1,456
Loan balance collectively evaluated for impairment	46,280	47,313
Other [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses		8
Individually evaluated for impairment
Collectively evaluated for impairment		8
Balance - Loans receivable	4,782	4,990
Loan balance individually evaluated for impairment
Loan balance collectively evaluated for impairment	4,782	4,990
Unallocated [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	176	250
Individually evaluated for impairment
Collectively evaluated for impairment	176	250
Balance - Loans receivable
Loan balance individually evaluated for impairment
Loan balance collectively evaluated for impairment

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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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