Common Stock and Options - Schedule of Options (Details) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2022 |
Sep. 30, 2021 |
Sep. 30, 2020 |
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| Number of options | |||
| Beginning balance (in shares) | 218,000 | 293,000 | |
| Employee stock options granted (in shares) | 0 | 0 | 118,000 |
| Exercised (in shares) | 14,000 | ||
| Forfeitures/expired (in shares) | (77,500) | (75,000) | |
| Ending balance (in shares) | 126,500 | 218,000 | 293,000 |
| Weighted average exercise price | |||
| Beginning balance (in dollars per share) | $ 33.78 | $ 32.09 | |
| Exercised (in dollars per share) | 33.80 | ||
| Forfeitures/expired (in dollars per share) | 33.80 | 27.15 | |
| Ending balance (in dollars per share) | $ 33.78 | $ 33.78 | $ 32.09 |
| Weighted average remaining contractual term(years) | |||
| Weighted average remaining contractual term | 3 months | 9 months 14 days | 1 year 9 months 14 days |
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- Definition Share-based compensation arrangement by share-based payment award options weighted average remaining contractual term abstract. No definition available.
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Weighted average price of options that were either forfeited or expired. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Gross number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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 A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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