Quarterly report pursuant to Section 13 or 15(d)

Business Acquisitions - Additional Information (Detail)

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Business Acquisitions - Additional Information (Detail) - Scruggs Company - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2018
May 15, 2018
Business Acquisition [Line Items]    
Acquisition of common shares and voting interest   100.00%
Revenues $ 16.3  
Net income $ 1.5