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Revenue - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Depreciation expense	$ 8,600	$ 5,300
Contract with Customer, Liability	$ 48,200	36,800	$ 27,900
Customer One | Revenue Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration Risk Threshold Percentage	13.00%
Equipment
Disaggregation of Revenue [Line Items]
Contract assets	$ 22,900	$ 23,600

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