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Business Segments, Geographic Data, Sales by Product Group and Major Customers - Additional Information (Detail) - Customer
9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Segment Reporting Information [Line Items]    
Percentage of net sales accounted from customer description No other customer accounted for more than 10% of the Company's total net sales.  
Number of major customers 3 3
Net Accounts Receivable | Three Largest Customers | Customer Concentration Risk    
Segment Reporting Information [Line Items]    
Percentage of net accounts receivable accounted for by three largest customers 33.00% 29.80%