Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details)

v3.23.3
Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Sep. 30, 2022
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross $ 847,667 $ 762,558
Accumulated depreciation, depletion and amortization (358,462) (304,935)
Construction in progress 15,890 23,789
Total property, plant and equipment, net 505,095 481,412
Construction equipment    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 447,467 402,581
Plants    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 208,708 167,625
Land and improvements    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 76,396 59,454
Mineral reserves    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 69,405 91,992
Buildings    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 36,885 32,566
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 7,538 7,110
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross $ 1,268 $ 1,230