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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