Intangible Assets- Schedule of Weighted Average Remaining Useful Lives by Definite-lived Intangible Asset (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Mar. 31, 2024	Sep. 30, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 21,591	$ 21,591
Accumulated Amortization	(11,188)	(10,201)
Net Book Value	$ 10,403	$ 11,390
Technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	6 years 1 month 6 days	6 years 6 months
Gross Carrying Amount	$ 16,901	$ 16,901
Accumulated Amortization	(10,221)	(9,527)
Net Book Value	$ 6,680	$ 7,374
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	6 years 4 months 24 days	6 years 10 months 24 days
Gross Carrying Amount	$ 4,690	$ 4,690
Accumulated Amortization	(967)	(674)
Net Book Value	$ 3,723	$ 4,016