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SHARE-BASED COMPENSATION (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Selling, general and administrative expenses |  |  |  |
SHARE-BASED COMPENSATION |  |  |  |
Total share-based compensation cost | $ 1.3 | $ 1.2 | $ 3.9 | $ 3.9
Performance-Accelerated Restricted Share Awards |  |  |  |
SHARE-BASED COMPENSATION |  |  |  |
Pretax compensation expense | $ 1.0 | 0.9 | $ 3.1 | 3.1
Non-vested shares | 280,504 |  | 280,504 |
Non-Employee Directors Plan |  |  |  |
SHARE-BASED COMPENSATION |  |  |  |
Pretax compensation expense | $ 0.3 | 0.3 | $ 0.8 | 0.8
Total income tax benefit recognized | 0.2 | $ 0.2 | 0.8 | $ 0.9
Total unrecognized compensation cost related to share-based compensation arrangements | $ 10.7 |  | $ 10.7 |
Remaining weighted-average period for recognition of total unrecognized compensation cost |  |  | 2 years 1 month 6 days |

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