Number Of Non Employee Resignations

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- Definition

Number Of Non Employee Retirements

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- Definition

Represents the right of an employee to receive additional shares of common stock expressed as a percentage of award granted on satisfaction of either a service condition, market condition or a performance condition under an equity-based compensation plan.

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Represents the right to receive cash under share-based compensation arrangement, expressed as a percentage

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- Definition

Represents the right to receive shares under share-based compensation arrangement, expressed as a percentage.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Grants in Period, Grant Date Fair Value

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No definition available.

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- Definition

Represents the minimum operating cash flow which the entity must achieve in the one-year period preceding the vesting date of share-based compensation awards with payout based on performance.

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No definition available.

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- Definition

The rate of forfeitures assumptions that is used in calculating the fair values of a share-based compensation award.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Fair Value

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No definition available.

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- Definition

Represents the performance period for awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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).

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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).

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- Definition

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

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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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- Definition

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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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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Stock-Based Compensation - Narrative (Details)			1 Months Ended	3 Months Ended			9 Months Ended
Stock-Based Compensation - Narrative (Details)	Oct. 01, 2021 USD ($) $ / shares shares	Feb. 17, 2021 $ / shares	Oct. 31, 2021 USD ($) director $ / shares shares	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) director $ / shares shares	Sep. 30, 2020 USD ($)
Stock-based Compensation arrangements
Stock based compensation expense \| $					$ 10,300,000	$ 11,400,000	$ 26,300,000	$ 36,000,000
Company's non-employee directors retirement \| director							1
Subsequent event
Stock-based Compensation arrangements
Stock option awards (in shares) \| shares	1,577,554
Grant date value merger consideration \| $			$ 14,600,000
Company's non-employee directors resignation \| director			3
Minimum \| Subsequent event
Stock-based Compensation arrangements
Exercise price (in dollars per share)	$ 8.47
Maximum \| Subsequent event
Stock-based Compensation arrangements
Exercise price (in dollars per share)	$ 28.72
Restricted Stock Awards \| Subsequent event
Stock-based Compensation arrangements
Granted (in shares) \| shares	3,364,354
Granted (in dollars per share)	$ 22.25
Grant date value merger consideration remaining fair value \| $	$ 23,500,000
Restricted Stock Awards \| Minimum \| Subsequent event
Stock-based Compensation arrangements
Award vesting period	2 months
Restricted Stock Awards \| Maximum \| Subsequent event
Stock-based Compensation arrangements
Award vesting period	3 years
Restricted Stock Units
Stock-based Compensation arrangements
Granted (in shares) \| shares							244,433
Granted (in dollars per share)							$ 14.08
Restricted Stock Units \| Subsequent event
Stock-based Compensation arrangements
Granted (in shares) \| shares			321,663
Granted (in dollars per share)			$ 19.29
Restricted Stock Units \| Director
Stock-based Compensation arrangements
Granted (in shares) \| shares							107,156
Granted (in dollars per share)							$ 18.50
Restricted Stock Units \| Executive Officer \| Subsequent event \| Share-based Payment Arrangement, Employee
Stock-based Compensation arrangements
Granted (in shares) \| shares	258,252
Granted (in dollars per share)	$ 22.25
Award vesting period	6 months
Performance Share Awards \| Minimum
Stock-based Compensation arrangements
Annual forfeiture rate assumption (as a percent)							0.00%
Performance Share Awards \| Maximum
Stock-based Compensation arrangements
Annual forfeiture rate assumption (as a percent)							4.00%
Performance Share Awards Based on Internal Performance Metrics
Stock-based Compensation arrangements
Right to receive additional shares, maximum							100.00%
Employee Performance Share Awards
Stock-based Compensation arrangements
Granted (in shares) \| shares							696,280
Granted (in dollars per share)							$ 18.58
Award vesting period							3 years
Minimum operating cash flow for the year preceding the performance period \| $							$ 100,000,000
Employee Performance Share Awards \| Tranche three
Stock-based Compensation arrangements
Award vesting rights (as a percent)							100.00%
Hybrid Performance Share Awards
Stock-based Compensation arrangements
Granted (in shares) \| shares							423,171
Granted (in dollars per share)							$ 18.58
Minimum operating cash flow for the year preceding the performance period \| $							$ 100,000,000
Hybrid Performance Share Awards \| Forecast
Stock-based Compensation arrangements
Stock based compensation expense \| $				$ 7,600,000
Hybrid Performance Share Awards \| Subsequent event
Stock-based Compensation arrangements
Vested (in shares) \| shares	960,497
Vested (in dollars per share)	$ 18.45
Hybrid Performance Share Awards \| Tranche one
Stock-based Compensation arrangements
Award vesting rights (as a percent)							25.00%
Hybrid Performance Share Awards \| Tranche two
Stock-based Compensation arrangements
Award vesting rights (as a percent)							25.00%
Hybrid Performance Share Awards \| Tranche three
Stock-based Compensation arrangements
Award vesting rights (as a percent)							50.00%
Performance Shares Based on Market Conditions
Stock-based Compensation arrangements
Right to receive shares							100.00%
Right to receive an additional award in cash							100.00%
TSR Performance Share Awards
Stock-based Compensation arrangements
Granted (in shares) \| shares							723,224
Granted (in dollars per share)		$ 16.07
Performance period							3 years
TSR Performance Share Awards \| Forecast
Stock-based Compensation arrangements
Stock based compensation expense \| $				$ 10,300,000
TSR Performance Share Awards \| Subsequent event
Stock-based Compensation arrangements
Award vesting rights (as a percent)	100.00%
Vested (in shares) \| shares	2,122,077
Vested (in dollars per share)	$ 16.30
TSR Performance Share Awards \| Minimum
Stock-based Compensation arrangements
Granted (in dollars per share)							$ 0.94
TSR Performance Share Awards \| Maximum
Stock-based Compensation arrangements
Granted (in dollars per share)							$ 7.76