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Goodwill and Other Intangibles - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 | Jul. 01, 2017 | Jun. 30, 2018 | Jul. 01, 2017 | Jul. 31, 2018 | Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | $ 357,507 |  | $ 357,507 |  |  | $ 359,819
Goodwill foreign currency translation adjustments |  |  | 2,000 |  |  |
Intangible assets, gross foreign currency translation adjustments |  |  | (15,000) |  |  |
Intangible assets, accumulated amortization foreign currency translation adjustments |  |  | (11,000) |  |  |
Amortization expense | 12,000 | $ 12,000 | 25,000 | $ 22,000 |  |
Future amortization expense, year 1 | 52,000 |  | 52,000 |  |  |
Future amortization expense, year 2 | 52,000 |  | 52,000 |  |  |
Future amortization expense, year 3 | 52,000 |  | 52,000 |  |  |
Future amortization expense, year 4 | 52,000 |  | 52,000 |  |  |
Future amortization expense, year 5 | $ 52,000 |  | $ 52,000 |  |  |
Subsequent Event [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible Assets Acquired |  |  |  |  | $ 30,000 |

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