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Restructuring Charges (Tables) | 9 Months Ended
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Sep. 30, 2017
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, 2016 |  | $ | 2,274 |  |  | $ | 1,092 |  |  | $ | 416 |  |  | $ | 3,782 |
Restructuring charges |  |  | 442 |  |  |  | 237 |  |  |  | 138 |  |  |  | 817 |
Cash payments |  |  | (1,048 | ) |  |  | (449 | ) |  |  | (451 | ) |  |  | (1,948 | )
Adjustment to liability |  |  | — |  |  |  | — |  |  |  | 2 |  |  |  | 2 |
Balance at September 30, 2017 |  | $ | 1,668 |  |  | $ | 880 |  |  | $ | 105 |  |  | $ | 2,653 |

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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://www.xbrl.org/2003/role/presentationRef -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 2: http://www.xbrl.org/2003/role/presentationRef -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=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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=27011515&loc=d3e140864-122747 + Details
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