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Segment Information - Additional Information (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2017 USD ($) Segment Customer | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of reportable segment | Segment |  |  |  |  |  |  |  |  | 4 |  |
Number of major customers accounted for revenue | Customer |  |  |  |  |  |  |  |  | 0 |  |
Net sales | $ 96,892 | $ 99,239 | $ 97,512 | $ 84,569 | $ 86,433 | $ 88,299 | $ 83,220 | $ 78,682 | $ 378,212 | $ 336,634 | $ 354,666
USA [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 147,600 | 135,300 | $ 142,500
Long-lived assets | $ 53,200 |  |  |  | $ 54,000 |  |  |  | $ 53,200 | $ 54,000 |

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