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Restructuring and Other Charges - Additional Information (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($) position | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) position
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges (Note 2) | $ 27,381 | $ 13,846 | $ 13,247
Restructuring charges | 27,400 | 13,800 | 13,200
Restructuring Reserve, Accrual Adjustment | 0 | (700) | (600)
Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 4,700 | 500 | 2,300
Restructuring Reserve, Accrual Adjustment | (100) | (100) | (300)
International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 21,900 | 12,700 | 5,600
Restructuring Reserve, Accrual Adjustment | 100 | (600) | (300)
Corporate |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges (Note 2) |  | 600 | 5,300
Restructuring charges | 800 | 600 | 5,300
Restructuring Reserve, Accrual Adjustment | $ 0 | $ 0 | $ 0
Staff Reductions |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Reduction in headcount | 121 | 99 | 45
Staff Reductions | Americas |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges (Note 2) | $ 4,700 | $ 500 | $ 2,300
Reduction in headcount | 42 | 12 | 8
Staff Reductions | International |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges (Note 2) | $ 21,900 | $ 12,700 | $ 5,600
Reduction in headcount | 76 | 87 | 34
Staff Reductions | Corporate |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges (Note 2) | $ 800 |  |
Reduction in headcount | position | 3 |  | 3

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- Definition Restructuring Charges before Adjustments - Restructuring charges before any adjustments to the accrual. + References No definition available. + Details
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- Definition The number of positions eliminated during the period as a result of restructuring activities. + References No definition available. + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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- Definition Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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