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TREASURY STOCK (Details) - USD ($) $ in Millions | 12 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018
COMMON STOCK REPURCHASE |  |
Number of shares of common stock repurchased | 75,113 | 74,880
Value of shares of common stock repurchased | $ 7.5 | $ 7.7

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