Property, Plant and Equipment (Tables)

9 Months Ended

Jun. 30, 2024

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Property, plant and equipment at June 30, 2024 and September 30, 2023 consisted of the following (in thousands):

	June 30, 2024		September 30, 2023
	(unaudited)
Construction equipment	$	525,969	$	447,467
Plants	243,759		208,708
Land and improvements	85,402		76,396
Mineral reserves	69,405		69,405
Buildings	37,973		36,885
Furniture and fixtures	8,277		7,538
Leasehold improvements	1,326		1,268
Total property, plant and equipment, gross	972,111		847,667
Accumulated depreciation, depletion and amortization	(406,702)		(358,462)
Construction in progress	13,697		15,890
Total property, plant and equipment, net	$	579,106	$	505,095