Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment - Narrative (Details)

v3.19.2
Property, Plant and Equipment - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Feb. 28, 2019
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Property, Plant and Equipment [Line Items]          
Depreciation, depletion and amortization expense       $ 22,698 $ 17,929
Asphalt Terminal          
Property, Plant and Equipment [Line Items]          
Purchase price $ 10,800        
Acquisition costs incurred $ 100        
Depreciation, depletion and amortization expense   $ 7,800 $ 6,500 $ 22,100 $ 17,600