v3.26.1
Summary of Significant Accounting Policies and Estimates - Software Development Costs (Details)
$ in Millions
 6 Months Ended
Mar. 31, 2026
USD ($)
category
Mar. 31, 2025
USD ($)
Summary of Significant Accounting Policies and Estimates    
Number of categories | category 3  
Capitalized internal-use software    
Summary of Significant Accounting Policies and Estimates    
Capitalized software costs $ 5.1 $ 4.0
Capitalized internal-use software | Minimum    
Summary of Significant Accounting Policies and Estimates    
Useful life 3 years  
Capitalized internal-use software | Maximum    
Summary of Significant Accounting Policies and Estimates    
Useful life 5 years  
Hosting Arrangements    
Summary of Significant Accounting Policies and Estimates    
Capitalized software costs $ 2.2 11.7
Hosting Arrangements | Minimum    
Summary of Significant Accounting Policies and Estimates    
Useful life 5 years  
Hosting Arrangements | Maximum    
Summary of Significant Accounting Policies and Estimates    
Useful life 7 years  
External-Use Software Development Cost    
Summary of Significant Accounting Policies and Estimates    
Useful life 5 years  
Capitalized software costs $ 1.9 $ 2.0