Stock Compensation Plans: Activity Related to Restricted Stock (Details) - $ / shares |
3 Months Ended | 9 Months Ended | |
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Number of Unvested Shares | |||
| Outstanding, period start (in shares) | 70,450 | 49,015 | |
| Forfeited (in shares) | (2,280) | (1,830) | |
| Vested (in shares) | 0 | (200) | |
| Outstanding, period end (in shares) | 68,170 | 68,170 | 46,985 |
| Weighted Average Grant Date Fair Value | |||
| Outstanding, period start (in dollars per share) | $ 31.94 | $ 29.28 | |
| Forfeited (in dollars per share) | $ 29.93 | 28.70 | |
| Vested (in dollars per share) | 0 | 27.37 | |
| Outstanding, period end (in dollars per share) | $ 32.00 | $ 32.00 | $ 29.31 |
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. 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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| X | ||||||||||
- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average grant-date fair value of options vested. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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