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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 |  |

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