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STOCKHOLDERS' EQUITY (Details) - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Nov. 20, 2019
Equity, Class of Treasury Stock [Line Items]
Stock repurchased during the period (in shares)	84,121	88,784
Stock repurchased during the period, value	$ 1.9	$ 2.9
Common Stock
Equity, Class of Treasury Stock [Line Items]
Shares authorized to be repurchased (in shares)			7,500,000
Stock repurchased under repurchase program (in shares)	2,683,579	3,497,565
Remaining number of shares authorized to be repurchased (in shares)	1,550,173

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