Annual report [Section 13 and 15(d), not S-K Item 405]

Significant Accounting Policies (Details)

v3.25.3
Significant Accounting Policies (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Property, Plant and Equipment [Line Items]    
Capitalized software, net $ 214,260 $ 187,677
Operating lease, weighted average discount rate, percent 6.00%  
Unrecognized compensation costs, period for recognition 4 years  
Revenue Benchmark | Customer Concentration Risk | Outside the US    
Property, Plant and Equipment [Line Items]    
Concentration risk 55.00%  
Restricted Stock Units | Share-based Payment Arrangement, Tranche One    
Property, Plant and Equipment [Line Items]    
Vesting period 1 year  
Restricted Stock Units | Share-based Payment Arrangement, Tranche Two    
Property, Plant and Equipment [Line Items]    
Vesting period 4 years  
Performance Stock Units    
Property, Plant and Equipment [Line Items]    
Vesting period 3 years  
Unrecognized compensation costs, period for recognition 3 years  
Technology Equipment    
Property, Plant and Equipment [Line Items]    
Capitalized software, net $ 40,900  
Office furniture    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life (not to exceed/up to) 7 years  
Software and Software Development Costs    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life (not to exceed/up to) 10 years