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Acquisition - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Aug. 31, 2017
Sep. 30, 2017
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Business Acquisition [Line Items]          
Business acquisition cash paid     $ 9,072 $ 9,382  
Goodwill   $ 15,765 15,765   $ 14,201
Fitz and Floyd Business          
Business Acquisition [Line Items]          
Business acquisition cash paid $ 9,100        
Net sales   $ 2,100 $ 2,100    
Goodwill and other intangibles 2,200        
Goodwill 500        
Fitz and Floyd Business | Customer Relationships and Trade Names          
Business Acquisition [Line Items]          
Estimated fair value of intangible assets acquired $ 1,700