Stock-based Compensation and Equity Grants - Stock Options Outstanding, Vested and Unvested (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions |
12 Months Ended | |
|---|---|---|
Sep. 30, 2022 |
Sep. 30, 2021 |
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| Share-Based Payment Arrangement [Abstract] | ||
| Vested and exercisable (in shares) | 2,117 | 1,662 |
| Unvested (in shares) | 275 | 712 |
| Options outstanding (in shares) | 2,392 | 2,374 |
| Weighted average exercise price of vested and exercisable shares (in dollars per share) | $ 5.86 | $ 3.91 |
| Aggregate intrinsic value of vested and exercisable shares | $ 13.6 | $ 13.9 |
| Weighted average contractual term remaining of vested and exercisable shares | 4 years 10 months 24 days | 4 years |
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- References No definition available.
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- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of non-vested options outstanding. No definition available.
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- Definition Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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