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Stock-Based Compensation (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jan. 29, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Proceeds from Stock Options Exercised | $ 952 | $ 2,616 |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation | 112,827 | 97,171 |
Tax withholding for share-based compensation | $ 2,800 | $ 3,900 |
Total intrinsic value of all options exercised | 2,600 | 4,100 |
Proceeds from employee stock purchase plan transactions | 2,061 | 1,689 |
Stock Options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Proceeds from Stock Options Exercised | 1,300 | $ 2,600 |
Total unrecognized compensation cost nonvested awards | $ 3,500 |  |
Weighted average period, unrecognized compensation cost, nonvested awards | 1 year 4 months 24 days |  |
Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total unrecognized compensation cost nonvested restricted stock units | $ 20,000 |  |
Weighted average period, unrecognized compensation cost, nonvested awards | 1 year 10 months 24 days |  |
Performance Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total unrecognized compensation cost nonvested restricted stock units | $ 500 |  |
Weighted average period, unrecognized compensation cost, nonvested awards | 1 month 6 days |  |
The Purchase Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares authorized |  |  | 3,425,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Continuous Days of Service | 90 days |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Hours Per Week Employed | 20 hours |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent | 85.00% |  |
Common shares issued to employees | 74,760 | 58,081 |
Shares available for future issuance | 395,467 |  |
Proceeds from employee stock purchase plan transactions | $ 1,700 |  |
The 2021 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares available for future grants | 1,920,325 |  |

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