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Stock-Based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Jan. 29, 2021 | Jan. 29, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Proceeds from Stock Options Exercised | $ 4,227 | $ 3,944 |  |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation | 611,415 | 83,928 |  |
Tax withholding for share-based compensation | $ 6,025 | $ 1,400 |  |
Total intrinsic value of all options exercised | 13,300 | 2,200 |  |
Proceeds from employee stock purchase plan transactions | 321 | 334 |  |
Stock Options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Proceeds from Stock Options Exercised | 4,200 | $ 3,900 |  |
Total unrecognized compensation cost nonvested awards | $ 4,800 |  |  |
Weighted average period, unrecognized compensation cost, nonvested awards | 1 year 7 months 6 days |  |  |
Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Total unrecognized compensation cost nonvested restricted stock units | $ 9,500 |  |  |
Weighted average period, unrecognized compensation cost, nonvested awards | 1 year 8 months 12 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% |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Offering Period | 3 months |  |  |
Common shares issued to employees | 17,936 | 25,246 |  |
Shares available for future issuance | 615,134 |  |  |
Proceeds from employee stock purchase plan transactions | $ 300 |  |  |
The 2021 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares authorized |  |  | 1,400,000 |
Number of shares available for future grants | 755,017 |  |  |
The 2021 Plan | Stock Options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period | 4 years |  |  |
Expiration period | 7 years |  |  |
Director | The 2021 Plan | Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period | 1 year |  |  |
Executives and Employees | The 2021 Plan | Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period | 4 years |  |  |
Executives | The 2021 Plan | Performance Shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period | 3 years |  |  |

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