Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment (Tables)

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Property, Plant and Equipment (Tables)
 6 Months Ended
Mar. 31, 2024
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment
Property, plant and equipment at March 31, 2024 and September 30, 2023 consisted of the following (in thousands):
March 31, 2024 September 30, 2023
(unaudited)
Construction equipment $ 511,111  $ 447,467 
Plants 233,611  208,708 
Land and improvements 79,903  76,396 
Mineral reserves 69,405  69,405 
Buildings 36,885  36,885 
Furniture and fixtures 7,775  7,538 
Leasehold improvements 1,268  1,268 
      Total property, plant and equipment, gross 939,958  847,667 
Accumulated depreciation, depletion and amortization (391,453) (358,462)
Construction in progress 16,846  15,890 
      Total property, plant and equipment, net $ 565,351  $ 505,095