Property, Plant and Equipment (Tables)

9 Months Ended

Jun. 30, 2023

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

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

	June 30, 2023		September 30, 2022
	(unaudited)
Construction equipment	$	448,736	$	402,581
Plants	187,514		167,625
Mineral reserves	69,405		91,992
Land and improvements	69,892		59,454
Buildings	32,682		32,566
Furniture and fixtures	7,383		7,110
Leasehold improvements	1,268		1,230
Total property, plant and equipment, gross	816,880		762,558
Accumulated depreciation, depletion and amortization	(349,289)		(304,935)
Construction in progress	35,141		23,789
Total property, plant and equipment, net	$	502,732	$	481,412