LOANS RECEIVABLE, NET AND RELATED ALLOWANCE FOR LOAN LOSSES (Schedule of Activity in the Allowance for Loan Losses by Loan Category) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2016	Mar. 31, 2015
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	$ 3,100	$ 2,886	$ 2,939	$ 2,835	$ 2,886	$ 2,835
Charge-offs	(528)	(45)	(695)	(353)
Recoveries	27	81	400	37
Provision	291	178	170	420	468	590
Balance at the end of period	2,890	3,100	2,814	2,939	2,890	2,814
One-to four-family residential [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	$ 386	395	474	402	395	402
Charge-offs		$ (45)	(90)	$ (12)
Recoveries			400
Provision	$ 113	$ 36	(415)	$ 84
Balance at the end of period	499	386	369	474	499	369
Commercial real estate [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	935	$ 931	$ 832	826	931	826
Charge-offs	$ (61)			$ (193)
Recoveries
Provision	$ (3)	$ 4	$ 10	$ 199
Balance at the end of period	871	935	842	832	871	842
Construction [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	$ 382	$ 453	748	$ 784	453	784
Charge-offs			$ (342)
Recoveries	$ 1			$ 37
Provision	(115)	$ (71)	$ 114	(73)
Balance at the end of period	268	382	520	748	268	520
Home equity lines of credit [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	55	$ 53	$ 66	62	53	62
Charge-offs	$ (84)			$ (147)
Recoveries		$ 80
Provision	$ 100	(78)	$ (11)	$ 151
Balance at the end of period	71	55	55	66	71	55
Commercial business [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	1,225	$ 969	733	$ 643	969	643
Charge-offs	(383)		$ (263)
Recoveries	26	$ 1
Provision	125	255	$ 434	$ 90
Balance at the end of period	993	1,225	904	733	993	904
Other [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	$ 9	$ 6	$ 6	9	6	9
Charge-offs				$ (1)
Recoveries
Provision	$ (1)	$ 3		$ (2)
Balance at the end of period	8	9	$ 6	6	8	6
Unallocated [Member]
Activity in the allowance for loan losses by loan category:
Balance at beginning of period	$ 108	$ 79	$ 80	$ 109	79	109
Charge-offs
Recoveries
Provision	$ 72	$ 29	$ 38	$ (29)
Balance at the end of period	$ 180	$ 108	$ 118	$ 80	$ 180	$ 118