STOCK COMPENSATION (Details) $ / shares in Units, $ in Millions	3 Months Ended
Dec. 31, 2020 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercisable (in shares)	0
Weighted Average Fair Value at Grant
Stock based compensation expense not yet recognized in income \| $	$ 9.4
Weighted average remaining period for unrecognized stock based compensation (in years)	2 years 3 months 3 days
Restricted Shares
Number of Shares
Nonvested shares outstanding, beginning of period (in shares)	790,083
Granted (in shares)	136,087
Vested (in shares)	(237,413)
Forfeited or expired (in shares)	(91,060)
Nonvested shares outstanding, end of period (in shares)	597,697
Weighted Average Fair Value at Grant
Nonvested shares outstanding, beginning of period (in dollars per share) \| $ / shares	$ 30.03
Granted (in dollars per share) \| $ / shares	26.22
Vested (in dollars per share) \| $ / shares	28.86
Forfeited or expired (in dollars per share) \| $ / shares	29.74
Nonvested shares outstanding, end of period (in dollars per share) \| $ / shares	$ 29.67
Performance share units
Number of Shares
Nonvested shares outstanding, beginning of period (in shares)	0
Granted (in shares)	60,984
Vested (in shares)	0
Forfeited or expired (in shares)	0
Nonvested shares outstanding, end of period (in shares)	60,984
Weighted Average Fair Value at Grant
Nonvested shares outstanding, beginning of period (in dollars per share) \| $ / shares	$ 0
Granted (in dollars per share) \| $ / shares	34.03
Vested (in dollars per share) \| $ / shares	0
Forfeited or expired (in dollars per share) \| $ / shares	0
Nonvested shares outstanding, end of period (in dollars per share) \| $ / shares	$ 34.03

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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