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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of ALL by Loan Category) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019
Allowance for Loan Losses:
Balance - Allowance for loans losses	$ 5,100	$ 4,888
Individually evaluated for impairment	320
Collectively evaluated for impairment	4,780	4,888
Balance - Loans receivable	530,448	523,001
Loan balance individually evaluated for impairment	8,396	10,354
Loan balance collectively evaluated for impairment	522,052	512,647
One-to four-family residential [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	707	731
Individually evaluated for impairment
Collectively evaluated for impairment	707	731
Balance - Loans receivable	195,290	190,415
Loan balance individually evaluated for impairment	1,396	1,405
Loan balance collectively evaluated for impairment	193,894	189,010
Commercial real estate [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	1,919	2,066
Individually evaluated for impairment
Collectively evaluated for impairment	1,919	2,066
Balance - Loans receivable	230,964	232,544
Loan balance individually evaluated for impairment	2,623	4,593
Loan balance collectively evaluated for impairment	228,341	227,951
Construction [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	574	511
Individually evaluated for impairment
Collectively evaluated for impairment	574	511
Balance - Loans receivable	29,777	28,451
Loan balance individually evaluated for impairment	2,900	2,900
Loan balance collectively evaluated for impairment	26,877	25,551
Home equity lines of credit [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	140	138
Individually evaluated for impairment
Collectively evaluated for impairment	140	138
Balance - Loans receivable	19,876	17,832
Loan balance individually evaluated for impairment
Loan balance collectively evaluated for impairment	19,876	17,832
Commercial business [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	1,495	1,184
Individually evaluated for impairment	320
Collectively evaluated for impairment	1,175	1,184
Balance - Loans receivable	49,729	48,769
Loan balance individually evaluated for impairment	1,477	1,456
Loan balance collectively evaluated for impairment	48,252	47,313
Other [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	2	8
Individually evaluated for impairment
Collectively evaluated for impairment	2	8
Balance - Loans receivable	4,812	4,990
Loan balance individually evaluated for impairment
Loan balance collectively evaluated for impairment	4,812	4,990
Unallocated [Member]
Allowance for Loan Losses:
Balance - Allowance for loans losses	263	250
Individually evaluated for impairment
Collectively evaluated for impairment	263	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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