Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Property, Plant and Equipment - Schedule of PP&E (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Sep. 30, 2018
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross $ 376,337 $ 338,118
Accumulated depreciation, depletion and amortization (175,660) (160,795)
Construction in progress 1,035 1,369
Total property, plant and equipment, net 201,712 178,692
Construction equipment    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 217,662 190,420
Asphalt plants    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 82,855 79,563
Land and improvements    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 34,888 29,624
Quarry reserves    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 20,749 20,908
Buildings    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 14,248 12,416
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 4,588 4,422
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross $ 1,347 $ 765