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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Tax Contingency [Line Items] |  |  |  |  |
Federal income tax rate |  | 35.00% | 35.00% | 35.00% |
Tax cuts and jobs act of 2017, change in tax rate, income tax expense (benefit) |  | $ (18,100) |  |  |
Tax cuts and jobs act of 2017, change in tax rate, deferred income tax expense |  | 39,000 |  |  |
Tax cuts and jobs act of 2017, reversal of valuation allowance |  | 6,800 |  |  |
Tax cuts and jobs act of 2017, change in tax rate, deferred income tax benefit |  | 18,100 |  |  |
Valuation allowances |  | 7,405 | $ 4,066 |  |
Research and development, tax credit |  | 6,300 | 1,100 | $ 1,500 |
Undistributed earnings of foreign subsidiaries |  | 397,800 |  |  |
Gross unrecognized tax benefits |  | 26,900 | $ 14,200 | $ 12,200 | $ 14,900
Unrecognized tax benefits that would impact effective tax rate |  | 16,800 |  |  |
Minimum [Member] |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Gross unrecognized tax benefits balance may decrease within the next twelve months |  | 0 |  |  |
Maximum [Member] |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Gross unrecognized tax benefits balance may decrease within the next twelve months |  | 600 |  |  |
United States - Federal [Member] |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Tax Cuts and Jobs Act of 2017, incomplete accounting, transition tax for accumulated foreign earnings, provisional income tax expense |  | 41,800 |  |  |
Net operating loss carryforwards |  | $ 47,900 |  |  |
Net operating loss carryforwards expiration year |  | 2037 |  |  |
Tax credit carryforwards |  | $ 9,100 |  |  |
Tax credit carryforwards expiration year |  | 2035 |  |  |
Foreign Tax Authority [Member] |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Tax Cuts and Jobs Act of 2017, incomplete accounting, transition tax for accumulated foreign earnings, provisional income tax expense |  | $ 3,800 |  |  |
Net operating loss carryforwards |  | $ 3,700 |  |  |
Net operating loss carryforwards expiration year |  | 2023 |  |  |
Tax credit carryforwards |  | $ 2,400 |  |  |
Tax credit carryforwards expiration year |  | 2027 |  |  |
State and Local Jurisdiction [Member] |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Tax Cuts and Jobs Act of 2017, incomplete accounting, transition tax for accumulated foreign earnings, provisional income tax expense |  | $ 300 |  |  |
Net operating loss carryforwards |  | 188,400 |  |  |
Tax credit carryforwards |  | $ 200 |  |  |
Tax credit carryforwards expiration year |  | 2018 |  |  |
State and Local Jurisdiction [Member] | Minimum [Member] |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Net operating loss carryforwards expiration year |  | 2018 |  |  |
State and Local Jurisdiction [Member] | Maximum [Member] |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Net operating loss carryforwards expiration year |  | 2037 |  |  |
Scenario Forcast [Member] |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Federal income tax rate | 21.00% |  |  |  |

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