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Stock-Based Compensation (Details) - USD ($)
$ in Thousands
9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jan. 29, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Proceeds from Stock Options Exercised $ 3,097 $ 952  
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation 109,516 112,827  
Tax withholding for share-based compensation $ 3,500 $ 2,800  
Total intrinsic value of all options exercised 9,600 2,600  
Proceeds from employee stock purchase plan transactions 1,665 2,061  
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Proceeds from Stock Options Exercised 3,100 $ 1,300  
Total unrecognized compensation cost nonvested awards $ 2,200    
Weighted average period, unrecognized compensation cost, nonvested awards 1 year 8 months 12 days    
Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total unrecognized compensation cost nonvested restricted stock units $ 22,700    
Weighted average period, unrecognized compensation cost, nonvested awards 2 years    
Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total unrecognized compensation cost nonvested restricted stock units $ 700    
Weighted average period, unrecognized compensation cost, nonvested awards 3 months 18 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 70,976 74,760  
Shares available for future issuance 297,521    
Proceeds from employee stock purchase plan transactions $ 1,700 $ 1,700  
The 2021 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares available for future grants 3,371,138