Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 137,071	$ 111,884
Less accumulated depreciation	(43,847)	(30,352)
Total property and equipment, net	93,224	81,532
Depreciation expense	14,300	13,400	$ 8,800
Land
Property, Plant and Equipment [Line Items]
Total property and equipment	6,323	3,275
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	24,890	22,681
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	30,503	22,968
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	32,637	26,696
Office equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	16,124	14,226
Company vehicles
Property, Plant and Equipment [Line Items]
Total property and equipment	23,957	18,231
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 2,637	$ 3,807