Property, Plant and Equipment (Tables)

6 Months Ended

Mar. 31, 2023

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Property, plant and equipment at March 31, 2023 and September 30, 2022 consisted of the following (in thousands):

	March 31, 2023		September 30, 2022
	(unaudited)
Construction equipment	$	444,027	$	402,581
Plants	182,917		167,625
Mineral reserves	69,466		91,992
Land and improvements	70,038		59,454
Buildings	33,656		32,566
Furniture and fixtures	7,476		7,110
Leasehold improvements	1,257		1,230
Total property, plant and equipment, gross	808,837		762,558
Accumulated depreciation, depletion and amortization	(336,220)		(304,935)
Construction in progress	30,368		23,789
Total property, plant and equipment, net	$	502,985	$	481,412