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Organization - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) Country | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Number of countries operate globally | Country | 14 |  |
Secondary Offering [Member] | Selling, General and Administrative Expense [Member] |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Offering costs | $ | $ 0.4 | $ 2.9 | $ 1.3

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- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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