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Leases - Additional Information (Details) $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Jul. 13, 2023 ft² | May 11, 2023 USD ($) | Sep. 30, 2023 USD ($) | Oct. 01, 2022 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |
Term of option to extend |  |  | 5 years |
Termination option period |  |  | 1 year |
Weighted-average discount rate - operating leases |  |  | 5.14% |
Weighted-average remaining lease term (years) - operating leases |  |  | 9 years 1 month 6 days |
Operating lease extension period |  |  | The lease expires in May 2031, with no option to extend |
Office space under lease agreement | ft² | 50,000 |  |  |
Lease expiration date | May 31, 2031 |  |  |
Rental expense |  |  | $ 12.7 | $ 11.3
Common area maintenance expense |  |  | $ 5.5 | $ 4.3
Lafayette City Center |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease extension period |  |  | an extension of the lease term through July 2035 |
Operating lease increase in right of use asset |  | $ 31.6 |  |
Operating lease increase in lease liability |  | $ 30.4 |  |

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