Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies (Details)

v3.24.3
Significant Accounting Policies (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
Sep. 30, 2023
May 31, 2021
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2022
Property, Plant and Equipment [Line Items]          
Amortization of intangible assets     $ 91,570 $ 94,591 $ 90,465
Year ended September 30, 2025     $ 92,058    
Diluted (in dollars per share)     $ 4.99 $ 2.63 $ 3.29
Capitalized software, net $ 107,811   $ 187,677 $ 107,811  
Impairment charges $ 2,900        
Operating lease, weighted average discount rate, percent     5.70%    
Unrecognized compensation costs, period for recognition     3 years    
Change in contract estimates          
Property, Plant and Equipment [Line Items]          
Diluted (in dollars per share)     $ (0.15) $ (0.16) $ (0.03)
Revenue Benchmark | Customer Concentration Risk | Outside the U.S.          
Property, Plant and Equipment [Line Items]          
Concentration risk     50.00%    
Restricted Stock Units          
Property, Plant and Equipment [Line Items]          
Vesting period       5 years  
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]          
Technology assets   $ 27,000      
Intangible assets, estimated useful life   12 years      
Amortization of intangible assets     $ 7,200    
Year ended September 30, 2025     10,800    
Capitalized software, net     $ 34,400    
Technology Equipment | Change in contract estimates          
Property, Plant and Equipment [Line Items]          
Diluted (in dollars per share)     $ 0.01    
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