Stock-based Compensation - Schedule of Share-Based Payment Arrangement, Option (Details) |
6 Months Ended |
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Mar. 31, 2026
USD ($)
$ / shares
shares
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| Number of Options | |
| Beginning balance (in shares) | shares | 36,500 |
| Exercised (in shares) | shares | (8,000) |
| Forfeitures/expired (in shares) | shares | (1,500) |
| Ending balance (in shares) | shares | 27,000 |
| Weighted Average Exercise Price | |
| Beginning balance (in dollars per share) | $ / shares | $ 33.74 |
| Exercised (in dollars per share) | $ / shares | 33.96 |
| Forfeitures/expired (in dollars per share) | $ / shares | 33.96 |
| Ending balance (in dollars per share) | $ / shares | $ 33.66 |
| Weighted Average Remaining Contractual Term (years) | |
| Weighted Average Remaining Contractual Term | 9 months 18 days |
| Aggregate Intrinsic Value (in thousands) | |
| Aggregate Intrinsic Value | $ | $ 1,114,000 |
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- Definition Share Based Compensation Arrangement By Share Based Payment Award Options Aggregate Intrinsic Value No definition available.
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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 Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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 fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents 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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- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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