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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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