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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Other Items Allocated to Comprehensive Income/Loss) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Unrealized holding (losses) gains arising during period on:    
Available-for-sale investments before tax $ (218) $ 49
Tax benefit (expense) 79 (21)
Available-for-sale investments after tax (139) 28
Less reclassification adjustment for net gains realized on available-for-sale investments before tax (72)
Tax benefit (expense) 29
Less reclassification adjustment for net gains realized on available-for-sale investments after tax (43)
Defined benefit pension plan before tax 490 (242)
Tax benefit (expense) (196) 97
Defined benefit pension plan after tax 294 (145)
Other comprehensive loss, net before tax 272 (265)
Tax benefit (expense), Total (117) 105
Other comprehensive gain (loss), net $ 155 $ (160)