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Operating Segments and Geographic Information - Reconciliations of Other Segment Measures to Consolidated Totals (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Total segment assets | $ 3,139,734 | $ 3,406,759 | $ 3,779,321
Cash and cash equivalents | 501,994 | 407,480 | 407,454
Goodwill | 1,251,938 | 1,243,669 | 1,206,877
Intangible assets, less accumulated amortization | 287,071 | 339,505 | 359,931
Deferred income taxes | 29,536 | 25,216 | 26,459
Payments to acquire property, plant, and equipment from continuing operations | 90,215 | 110,002 | 97,847
Discontinued operations acquisition of property, plant and equipment | 16,712 | 29,414 | 22,681
Reportable Segment |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Total segment assets | 985,252 | 991,607 | 938,971
Payments to acquire property, plant, and equipment from continuing operations | 69,898 | 77,478 | 72,153
Corporate assets |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Total segment assets | 83,943 | 24,147 | 16,786
Assets of discontinued operations | 0 | 375,135 | 822,843
Payments to acquire property, plant, and equipment from continuing operations | $ 3,605 | $ 3,110 | $ 3,013

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