Major Customers and Foreign Sales - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Major Customers [Line Items]
Sales outside Country, percentage	37.00%	38.00%	30.00%
Europe [Member]
Major Customers [Line Items]
Sales outside Country, percentage	9.00%
Long lived assets located outside Country	$ 14.8
Outside United States [Member]
Major Customers [Line Items]
Long lived assets located outside Country	$ 34.8	$ 51.8
Asia [Member]
Major Customers [Line Items]
Sales outside Country, percentage	16.00%
Long lived assets located outside Country	$ 17.8
Net Sales [Member] | Customer Concentration Risk [Member]
Major Customers [Line Items]
Major customer	10.00%	10.00%	10.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Major Customers [Line Items]
Major customer	10.00%	10.00%	10.00%