Quarterly report pursuant to Section 13 or 15(d)

Business Acquisitions - Proforma Revenue and Net Income (Detail)

v3.19.1
Business Acquisitions - Proforma Revenue and Net Income (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2018
Mar. 31, 2018
Mar. 31, 2019
Sep. 30, 2018
May 15, 2018
Business Acquisition [Line Items]          
Long-term debt     $ 55,858 $ 63,264  
Scruggs Company          
Business Acquisition [Line Items]          
Pro forma revenues $ 139,212 $ 312,572      
Pro forma revenues $ 14,377 $ 25,035      
Senior Notes          
Business Acquisition [Line Items]          
Long-term debt     $ 50,100 $ 57,300  
Senior Notes | Scruggs Company          
Business Acquisition [Line Items]          
Long-term debt         $ 22,000