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LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of Classes of the Loan Portfolio Summarized by Aging Categories) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	$ 504,006	$ 511,323
Total Past Due	10,432	1,175
Non - Accrual	4,061	906
Total loans receivable	514,438	512,498
One-to four-family residential [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	184,741	185,132
Total Past Due	1,587	155
Non - Accrual	176	138
Total loans receivable	186,328	185,287
Commercial real estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	218,163	218,892
Total Past Due	4,983	455
Non - Accrual	452	455
Total loans receivable	223,146	219,347
Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	28,387	30,412
Total Past Due	2,900
Non - Accrual	2,900
Total loans receivable	31,287	30,412
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	18,431	17,892
Total Past Due	87	90
Non - Accrual	58	90
Total loans receivable	18,518	17,982
Commercial business [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	48,967	52,845
Total Past Due	875	475
Non - Accrual	475	223
Total loans receivable	49,842	53,320
Other [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	5,317	6,150
Total Past Due
Non - Accrual
Total loans receivable	5,317	6,150
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	5,410	269
30-59 Days Past Due [Member] | One-to four-family residential [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,411	17
30-59 Days Past Due [Member] | Commercial real estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	3,586
30-59 Days Past Due [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
30-59 Days Past Due [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	29
30-59 Days Past Due [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	384	252
30-59 Days Past Due [Member] | Other [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	961
60-89 Days Past Due [Member] | One-to four-family residential [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
60-89 Days Past Due [Member] | Commercial real estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	945
60-89 Days Past Due [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
60-89 Days Past Due [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
60-89 Days Past Due [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	16
60-89 Days Past Due [Member] | Other [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	4,061	906
90 Days Past Due [Member] | One-to four-family residential [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	176	138
90 Days Past Due [Member] | Commercial real estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	452	455
90 Days Past Due [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	2,900
90 Days Past Due [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	58	90
90 Days Past Due [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	475	223
90 Days Past Due [Member] | Other [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due

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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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