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Major Customers and Foreign Sales - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Major Customers [Line Items] |  |  |
Sales outside Country, percentage | 38.00% | 30.00% | 21.00%
Outside United States [Member] |  |  |
Major Customers [Line Items] |  |  |
Long lived assets located outside Country | $ 62.9 | $ 49.2 |
Net Sales [Member] | Customer Concentration Risk [Member] |  |  |
Major Customers [Line Items] |  |  |
Major customer | 10.00% | 10.00% |
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |  |
Major Customers [Line Items] |  |  |
Major customer | 10.00% | 10.00% |

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