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SHARE-BASED COMPENSATION (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
SHARE-BASED COMPENSATION
Non-vested shares	209,274
Selling, general and administrative expenses
SHARE-BASED COMPENSATION
Total share-based compensation cost	$ 2.5	$ 2.2
Total income tax benefit recognized	0.8	0.2
Performance-Accelerated Restricted Share (PARS) Awards
SHARE-BASED COMPENSATION
Pretax compensation expense	2.2	1.9
Compensation Plan for Non-Employee Directors
SHARE-BASED COMPENSATION
Pretax compensation expense	0.3	$ 0.3
Total unrecognized compensation cost related to share-based compensation arrangements	$ 17.7
Weighted average period	2 years

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