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Subsequent Events - Additional Information (Detail) - USD ($)
1 Months Ended 9 Months Ended
Oct. 25, 2017
Sep. 30, 2017
Sep. 30, 2016
Subsequent Event [Line Items]      
Proceeds from sale of business   $ 2,300,000 $ 349,373,000
Industrial Acquisitions LLC and Industrial Products LLC [Member]      
Subsequent Event [Line Items]      
Proceeds from sale of business   $ 2,300,000  
Industrial Acquisitions LLC and Industrial Products LLC [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Proceeds from sale of business $ 3,500,000    
Loss on sales of businesses $ 800,000