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Retirement Plans - Schedule of Costs of Retirement Plans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Defined Contribution Plan Disclosure |  |  |  |
Expenses associated with contributions made | $ 482 | $ 734 | $ 972 | $ 2,174
United States |  |  |  |
Defined Contribution Plan Disclosure |  |  |  |
Expenses associated with contributions made | 346 | 602 | 558 | 1,744
Canada |  |  |  |
Defined Contribution Plan Disclosure |  |  |  |
Expenses associated with contributions made | 25 | 29 | 93 | 102
United Kingdom |  |  |  |
Defined Contribution Plan Disclosure |  |  |  |
Expenses associated with contributions made | $ 111 | $ 103 | $ 321 | $ 328

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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