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Stock-Based Compensation (Non-Vested Options) (Details) shares in Thousands	12 Months Ended
	Sep. 30, 2021 $ / shares shares
Restricted Stock Units
Nonvested Number of Restricted Stock Units [Roll Forward]
Number of Restricted Stock Units, Beginning Balance | shares	972
Number of Restricted Stock Units, Granted | shares	366
Number of Restricted Stock Units, Vested | shares	(373)
Number of Restricted Stock Units, Canceled | shares	(153)
Number of Restricted Stock Units, Ending Balance | shares	812
Nonvested Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share [Roll Forward]
Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share, Beginning Balance | $ / shares	$ 13.20
Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share, Granted | $ / shares	18.76
Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share, Vested | $ / shares	12.80
Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share, Canceled | $ / shares	14.12
Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share, Ending Balance | $ / shares	$ 15.72
Performance Shares
Nonvested Number of Restricted Stock Units [Roll Forward]
Number of Restricted Stock Units, Beginning Balance | shares	0
Number of Restricted Stock Units, Granted | shares	18
Number of Restricted Stock Units, Vested | shares	0
Number of Restricted Stock Units, Canceled | shares	0
Number of Restricted Stock Units, Ending Balance | shares	18
Nonvested Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share [Roll Forward]
Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share, Beginning Balance | $ / shares	$ 0
Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share, Granted | $ / shares	25.15
Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share, Vested | $ / shares	0
Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share, Canceled | $ / shares	0
Restricted Stock Units, Weighted Average Grant Date Fair Value per Common Share, Ending Balance | $ / shares	$ 25.15

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

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.

+ References

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- Definition

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).

+ References

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-Publisher FASB
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- Definition

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).

+ References

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- Definition

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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- Definition

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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- Definition

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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-Publisher FASB
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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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-Publisher FASB
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- Definition

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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