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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 6 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Other comprehensive income (loss)        
Available-for-sale investments before tax $ 30 $ 207 $ (281) $ 37
Tax benefit (expense) (11) (76) 102 (16)
Available-for-sale investments after tax 19 131 (179) 21
Reclassification adjustment for net gains (losses) realized on available-for-sale investments before tax (24) (63)
Tax benefit (expense) [1],[2] 10 25
Reclassification adjustment for net gains (losses) realized on available-for-sale investments after tax [1],[2] (14) (38)
Other comprehensive (loss) income, net before tax 30 183 (281) (26)
Tax benefit (expense), Total (11) (66) 102 9
Other comprehensive (loss) income, net $ 19 $ 117 $ (179) $ (17)
[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