Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 150,436	$ 137,071
Less accumulated depreciation	(58,860)	(43,847)
Total property and equipment, net	91,576	93,224
Depreciation expense	16,400	14,300	$ 13,400
Land
Property, Plant and Equipment [Line Items]
Total property and equipment	6,323	6,323
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	24,940	24,890
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	34,426	30,503
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	35,979	32,637
Office equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	17,355	16,124
Company vehicles
Property, Plant and Equipment [Line Items]
Total property and equipment	29,448	23,957
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 1,965	$ 2,637