Leases - Additional Information (Details)	1 Months Ended		9 Months Ended		12 Months Ended
	Jan. 31, 2026 USD ($)	Sep. 30, 2025 USD ($) ft² Installment	Sep. 30, 2025 USD ($) ft² Installment	Sep. 30, 2024 USD ($)	Dec. 31, 2021 USD ($) ft²
Lessee Lease Description [Line Items]
Area of office space | ft²		31,280	31,280
Lease expiration month and year			2027-11
Operating leases, weighted-average remaining lease term		9 years 6 months	9 years 6 months
Operating leases, weighted-average discount rate		10.60%	10.60%
Cash paid for operating lease liabilities			$ 6,200,000	$ 6,100,000
Finance lease description			In September 2025, the Company entered into an agreement to lease lab equipment for 36 months with 33 monthly payments of $71,479, commencing in January 2026. The Company classified this lease as a finance lease as the agreement contains an early buyout option which the Company is reasonably certain to exercise. Pursuant to the early buyout option, the Company can purchase the equipment and simultaneously terminate the agreement by paying the purchase price of $2.1 million in January 2026. The purchase price was recognized as part of right-of-use ("ROU") finance lease assets and finance lease liabilities. As of September 30, 2025, finance lease ROU assets and ROU liabilities were $3.3 million and $3.2 million, respectively. As of December 31, 2024, the Company had no finance leases. Finance lease ROU assets are classified as long-term assets and are reported within the other long-term assets line in the consolidated balance sheets. Finance lease ROU liabilities with payments due within one year are classified as short-term liabilities and reported within the accrued and other current liabilities line in the consolidated balance sheets. Finance lease ROU liabilities with payments due beyond one year are classified as long-term liabilities and reported with the other long-term liabilities line in the consolidated balance sheets.
Finance lease term		36 months	36 months
Finance lease, number of monthly installment payments | Installment		33	33
Finance lease payments due		$ 71,479	$ 71,479
Finance lease, commencement month and year		2026-01
Finance lease option to terminate [true false]		true
Finance lease option to terminate description			The Company classified this lease as a finance lease as the agreement contains an early buyout option which the Company is reasonably certain to exercise. Pursuant to the early buyout option, the Company can purchase the equipment and simultaneously terminate the agreement by paying the purchase price of $2.1 million in January 2026.
Finance lease ROU assets		$ 3,300,000	$ 3,300,000
Finance lease ROU liabilities		$ 3,200,000	$ 3,200,000
Scenario Forecast
Lessee Lease Description [Line Items]
Finance lease termination payment purchase price	$ 2,100,000
Minimum
Lessee Lease Description [Line Items]
Lease Expiration Year			2025
Maximum
Lessee Lease Description [Line Items]
Lease Expiration Year			2026
Laboratory Operations and its New Corporate Headquarters
Lessee Lease Description [Line Items]
Area of office space | ft²					100,000
Lease expiration month and year					2036-03
Operating lease, existence of option to extend					true
Operating lease, option to extend			two options to extend the term for a period of five-years
Operating lease option to extend term					5 years
Lease term					13 years 6 months
Operating lease landlord agreed to contribution amount, approximate					$ 15,100,000