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LOANS RECEIVABLE, NET (Schedule of Classes of the Loan Portfolio Summarized by Aging Categories) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	$ 600,512	$ 515,546
Total Past Due	10,747	7,455
Non - Accrual	9,732	6,894
Total loans receivable	611,259	523,001
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due		503
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,015	58
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	9,732	6,894
One-to four-family residential [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	209,455	190,301
Total Past Due	905	114
Non - Accrual	905	114
Total loans receivable	210,360	190,415
One-to four-family residential [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
One-to four-family residential [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
One-to four-family residential [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	905	114
Commercial real estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	245,029	229,331
Total Past Due	3,105	3,213
Non - Accrual	2,219	2,652
Total loans receivable	248,134	232,544
Commercial real estate [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due		503
Commercial real estate [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	886	58
Commercial real estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	2,219	2,652
Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	23,101	25,551
Total Past Due	5,141	2,900
Non - Accrual	5,141	2,900
Total loans receivable	28,242	28,451
Construction [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
Construction [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
Construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	5,141	2,900
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	19,373	17,832
Total Past Due
Non - Accrual
Total loans receivable	19,373	17,832
Home equity lines of credit [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
Home equity lines of credit [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
Home equity lines of credit [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
Commercial business [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	99,397	47,541
Total Past Due	1,596	1,228
Non - Accrual	1,467	1,228
Total loans receivable	100,993	48,769
Commercial business [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
Commercial business [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	129
Commercial business [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,467	1,228
Other [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	4,157	4,990
Total Past Due
Non - Accrual
Total loans receivable	4,157	4,990
Other [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
Other [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
Other [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due

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