OTHER COMPREHENSIVE INCOME (LOSS) (Schedule of Components of Other Comprehensive Income (Loss) and the Related Income Tax Effects) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Other comprehensive income (loss)
Available-for-sale investments before tax		$ (223)	$ 44	$ (469)	$ (237)
Tax benefit (expense)		115	(16)	129	86
Available-for-sale investments after tax		(108)	28	(340)	(151)
Reclassification adjustment for net unrealized gains on securities reclassified available for sale				104
Tax benefit (expense)				(32)
Reclassification adjustment for net unrealized gains on securities reclassified available for sale net of tax				72
Reclassification adjustment for net gains (losses) realized on available-for-sale investments before tax	[1],[2]			(107)
Tax benefit (expense)	[1],[2]			33
Reclassification adjustment for net gains (losses) realized on available-for-sale investments after tax	[1],[2]			(74)
Other comprehensive income, net before tax		(223)	44	(472)	(237)
Tax benefit (expense), Total		115	(16)	130	86
Other comprehensive (loss), net		$ (108)	$ 28	$ (342)	$ (151)

[1] Realized gains on securities transactions included in gains on sales of investment securities in the accompanying Consolidated Statements of Operations.

[2] Tax effect included in income tax expense in the accompanying Consolidated Statements of Operations.