Leases - Narrative (Details)	6 Months Ended
	Mar. 31, 2026 sublease
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of facilities subleased	1
Sublease term	5 years
Weighted-average remaining lease term	5 years 1 month 6 days
Weighted-average discount rate	6.90%
Minimum | Facilities and Equipment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease term (in years)	9 months
Maximum | Facilities and Equipment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease term (in years)	6 years 9 months 18 days