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Goodwill and Other Intangibles - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |
Goodwill | $ 355,614 | $ 359,819 |
Goodwill foreign currency translation adjustments | (4,000) |  |
Intangible assets, gross foreign currency translation adjustments | (23,000) |  |
Intangible assets, accumulated amortization foreign currency translation adjustments | (17,000) |  |
Amortization expense | 50,000 | $ 45,000 | $ 45,000
Future amortization expense, year 1 | 51,000 |  |
Future amortization expense, year 2 | 51,000 |  |
Future amortization expense, year 3 | 51,000 |  |
Future amortization expense, year 4 | 51,000 |  |
Future amortization expense, year 5 | $ 51,000 |  |

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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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