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Restructuring Charges (Tables) | 12 Months Ended
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Dec. 31, 2020
Restructuring And Related Activities [Abstract] |
Changes to Restructuring Liability by Major Restructuring Activity | Changes to the restructuring liability by major restructuring activity are as follows:
|  | GES |  |  | Other Restructurings |  |  |  |  |
(in thousands) |  | Severance & Employee Benefits |  |  | Facilities |  |  | Severance & Employee Benefits |  |  | Total |
Balance at December 31, 2017 |  | $ | 1,551 |  |  | $ | 807 |  |  | $ | 191 |  |  | $ | 2,549 |
Restructuring charges |  |  | 1,457 |  |  |  | — |  |  |  | 130 |  |  |  | 1,587 |
Cash payments |  |  | (1,379 | ) |  |  | (156 | ) |  |  | (181 | ) |  |  | (1,716 | )
Adjustment to liability |  |  | 410 |  |  |  | (451 | ) |  |  | (128 | ) |  |  | (169 | )
Balance at December 31, 2018 |  |  | 2,039 |  |  |  | 200 |  |  |  | 12 |  |  |  | 2,251 |
Restructuring charges |  |  | 6,071 |  |  |  | 1,817 |  |  |  | 492 |  |  |  | 8,380 |
Cash payments |  |  | (5,169 | ) |  |  | (752 | ) |  |  | (272 | ) |  |  | (6,193 | )
Adjustment to liability |  |  | (6 | ) |  |  | 74 |  |  |  | 7 |  |  |  | 75 |
Balance at December 31, 2019 |  |  | 2,935 |  |  |  | 1,339 |  |  |  | 239 |  |  |  | 4,513 |
Restructuring charges |  |  | 6,563 |  |  |  | 5,784 |  |  |  | 1,093 |  |  |  | 13,440 |
Cash payments |  |  | (7,051 | ) |  |  | (2,573 | ) |  |  | (1,201 | ) |  |  | (10,825 | )
Non-cash items(1) |  |  | — |  |  |  | (1,789 | ) |  |  | — |  |  |  | (1,789 | )
Adjustment to liability |  |  | (7 | ) |  |  | 5 |  |  |  | (107 | ) |  |  | (109 | )
Balance at December 31, 2020 |  | $ | 2,440 |  |  | $ | 2,766 |  |  | $ | 24 |  |  | $ | 5,230 |
(1) | Represents the impact related to the closure and liquidation of GES’ United Kingdom-based audio-visual services business during the year ended December 31, 2020.

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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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