Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment - Schedule of PP&E (Details)

v3.19.1
Property, Plant and Equipment - Schedule of PP&E (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Sep. 30, 2018
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross $ 364,498 $ 338,118
Accumulated depreciation, depletion and amortization (168,550) (160,795)
Construction in progress 1,921 1,369
Total property, plant and equipment, net 197,869 178,692
Construction equipment    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 207,931 190,420
Asphalt plants    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 81,705 79,563
Land and improvements    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 34,815 29,624
Quarry reserves    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 20,822 20,908
Buildings    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 13,320 12,416
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 4,661 4,422
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross $ 1,244 $ 765