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Goodwill and Intangible Assets - Additional Information (Details) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2020 USD ($) facility | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Nov. 30, 2018 USD ($) | Oct. 31, 2018 USD ($) | Apr. 30, 2018 USD ($) | Nov. 30, 2016 USD ($)
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |  |  |  |
Impairment charges against goodwill or intangible assets | $ 0 | $ 0 | $ 0 |  |  |  |
Term of strategic plan | 3 years |  |  |  |  |  |
Term used to extrapolate cash flow projections | 5 years |  |  |  |  |  |
Growth rate used to extrapolate cash flow projections (percentage) | 2.00% |  |  |  |  |  |
Intangible assets and goodwill | $ 428,000,000.0 | 449,600,000 | 482,000,000.0 |  |  |  |
Goodwill | $ 198,600,000 | $ 198,300,000 | $ 198,400,000 |  |  |  |
Length of forecast period | 5 years |  |  |  |  |  |
Number of Facilities | facility | 1 |  |  |  |  |  |
Impakt |  |  |  |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |  |  |  |
Goodwill | $ 112,800,000 |  |  | $ 112,600,000 |  |  |
Acquisitions prior to Impakt acquisition |  |  |  |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |  |  |  |
Goodwill |  |  |  |  | $ 19,500,000 |  |
Karel |  |  |  |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | $ 3,700,000
Atrenne |  |  |  |  |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | $ 62,600,000 |

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- Definition The growth rate used to extrapolate cash flow projections beyond the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 134 -Subparagraph d -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_134_d_iv&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 134 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_134_e_iv&doctype=Standard -URIDate 2020-01-01 + Details
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