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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, 2017	Sep. 30, 2017
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	$ 469,582	$ 470,416
Total Past Due	11,991	3,575
Non - Accrual	1,316	2,358
Total loans receivable	481,573	473,991
One-to four-family residential [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	170,310	176,546
Total Past Due	5,151	1,790
Non - Accrual	910	1,663
Total loans receivable	175,461	178,336
Commercial real estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	203,710	206,218
Total Past Due	6,371	900
Non - Accrual	91	482
Total loans receivable	210,081	207,118
Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	22,811	22,622
Total Past Due
Non - Accrual
Total loans receivable	22,811	22,622
Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	20,355	18,344
Total Past Due	231	192
Non - Accrual	192
Total loans receivable	20,586	18,536
Commercial business [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	46,357	40,420
Total Past Due	238	693
Non - Accrual	123	213
Total loans receivable	46,595	41,113
Other [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Current	6,039	6,266
Total Past Due
Non - Accrual
Total loans receivable	6,039	6,266
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	10,458	818
30-59 Days Past Due [Member] | One-to four-family residential [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	4,241
30-59 Days Past Due [Member] | Commercial real estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	6,102	418
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
30-59 Days Past Due [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	115	400
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	217	399
60-89 Days Past Due [Member] | One-to four-family residential [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due		127
60-89 Days Past Due [Member] | Commercial real estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	178
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	39	192
60-89 Days Past Due [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due		80
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	1,316	2,358
90 Days Past Due [Member] | One-to four-family residential [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	910	1,663
90 Days Past Due [Member] | Commercial real estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	91	482
90 Days Past Due [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due
90 Days Past Due [Member] | Home equity lines of credit [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	192
90 Days Past Due [Member] | Commercial business [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	123	213
90 Days Past Due [Member] | Other [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due

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Financing receivables that are current.

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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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