SHARE-BASED COMPENSATION (Details) - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Selling, general and administrative expenses
SHARE-BASED COMPENSATION
Total share-based compensation cost	$ 1.4	$ 1.4
Performance-Accelerated Restricted Share Awards
SHARE-BASED COMPENSATION
Pretax compensation expense	$ 1.1	1.1
Non-vested shares	220,300
Non-Employee Directors Plan
SHARE-BASED COMPENSATION
Pretax compensation expense	$ 0.3	0.3
Total income tax benefit recognized	0.3	$ 0.3
Total unrecognized compensation cost related to share-based compensation arrangements	$ 7.1
Remaining weighted-average period for recognition of total unrecognized compensation cost	1 year 8 months 12 days

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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