Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period		8 years
Impairment charges		$ 7,649	$ 5,189
Amortization expense related to intangible assets		$ 800	3,100	$ 100
Customer Relationship
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period		4 years 7 months 6 days
Trade Name
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period		3 years 4 months 24 days
Semiconductor Fabrication Solutions
Finite-Lived Intangible Assets [Line Items]
Impairment charges	$ 1,300		$ 5,200