Quarterly report pursuant to Section 13 or 15(d)

Business Acquisitions - Additional Information (Detail)

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Business Acquisitions - Additional Information (Detail) - USD ($)
$ in Thousands
Oct. 01, 2019
Dec. 31, 2019
Sep. 30, 2019
Business Acquisition [Line Items]      
Goodwill allocation   $ 45,467 $ 38,546
HMA Manufacturing Plant and Paving Company      
Business Acquisition [Line Items]      
Cash payment to acquire business $ 17,700    
Property, plant and equipment allocation 9,600    
Other current assets allocation 1,200    
Goodwill allocation 6,900    
Acquisition related costs $ 100