Revenue - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Depreciation expense	$ 3,800	$ 3,200
Contract with Customer, Liability	27,900	21,600	$ 15,500
Equipment
Disaggregation of Revenue [Line Items]
Contract assets	$ 16,600	$ 16,500