Quarterly report pursuant to Section 13 or 15(d)

Business Acquisition - Schedule of Provisional Allocation of the Purchase Price to Assets Acquired and Liabilities (Detail)

v3.10.0.1
Business Acquisition - Schedule of Provisional Allocation of the Purchase Price to Assets Acquired and Liabilities (Detail) - USD ($)
$ in Thousands
Jun. 30, 2018
May 15, 2018
Sep. 30, 2017
May 15, 2017
Property, plant and equipment        
Goodwill $ 34,398   $ 30,600  
Scruggs Company [Member]        
Business Acquisition [Line Items]        
Contracts receivable, including retainage       $ 9,184
Costs and estimated earnings in excess of billings on uncompleted contracts       2,027
Inventory       4,323
Other current assets [1]       731
Property, plant and equipment        
Quarry reserves       13,986
Goodwill   $ 3,800   3,798
Accounts payable       (3,646)
Billings in excess of costs and estimated earnings on uncompleted contracts       (4,589)
Current maturities of long-term debt       (388)
Other current liabilities       (1,638)
Due to seller       (4,940)
Long-term debt, net of current maturities       (738)
Other liabilities       (133)
Total       51,319
Scruggs Company [Member] | Land and Improvements [Member]        
Property, plant and equipment        
Asphalt plants       7,302
Scruggs Company [Member] | Asphalt Plants [Member]        
Property, plant and equipment        
Asphalt plants       6,917
Scruggs Company [Member] | Buildings [Member]        
Property, plant and equipment        
Asphalt plants       1,552
Scruggs Company [Member] | Construction Equipment [Member]        
Property, plant and equipment        
Asphalt plants       $ 17,571
[1] (1) Other current assets excludes cash acquired