Stock-Based Compensation - Information (Details)	12 Months Ended
Sep. 30, 2022 shares
Performance-based stock units
Share-based Compensation
Term of award	10 years
Performance-based stock options
Share-based Compensation
Term of award	10 years
2011 Equity Incentive Plan \| Performance-based stock units
Share-based Compensation
Awards outstanding	2,470
2015 Equity Incentive Plan
Share-based Compensation
Aggregate number of common stock authorized for issuance	34,565,837
Number of shares available for grant	13,546,604
Term of award	10 years
2015 Equity Incentive Plan \| Minimum
Share-based Compensation
Vesting period	1 year
2015 Equity Incentive Plan \| Maximum
Share-based Compensation
Vesting period	4 years

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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
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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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No definition available.

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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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