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Retirement Plans - Schedule of Costs of Retirement Plans (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Defined Contribution Plan Disclosure |  |  |  |
Expenses associated with contributions made | $ 564 | $ 832 | $ 574 | $ 1,527
United States |  |  |  |
Defined Contribution Plan Disclosure |  |  |  |
Expenses associated with contributions made | 433 | 680 | 295 | 1,230
Canada |  |  |  |
Defined Contribution Plan Disclosure |  |  |  |
Expenses associated with contributions made | 30 | 34 | 69 | 72
United Kingdom |  |  |  |
Defined Contribution Plan Disclosure |  |  |  |
Expenses associated with contributions made | $ 101 | $ 118 | $ 210 | $ 225

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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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