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Restructuring and Integration - Summary of Restructuring and Integration Charges (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Severance and other costs |  | $ 228 |  | $ 17 | $ 1,535 |
Site closure and other associated costs | $ 345 | 378 |  | 345 | 3,316 |
Total | 345 | $ 606 | [1] | 362 | $ 4,851 | [1]
Reserve beginning balance |  |  |  | 2,625 |  |
Charges |  |  |  | 362 |  |
Paid in |  |  |  | (1,747) |  |
Reserve ending balance | 1,240 |  |  | 1,240 |  |
Severance and Other Employee Costs [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Reserve beginning balance |  |  |  | 1,000 |  |
Charges |  |  |  | 17 |  |
Paid in |  |  |  | (1,017) |  |
Site Closure Costs [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Reserve beginning balance |  |  |  | 1,625 |  |
Charges |  |  |  | 345 |  |
Paid in |  |  |  | (730) |  |
Reserve ending balance | $ 1,240 |  |  | $ 1,240 |  |
[1] | Includes the effects of discontinued operations (Note 2) and prior periods' revisions (Note 1 and Note 15)

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