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Restructuring Charges (Tables) | 12 Months Ended
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Dec. 31, 2016
Restructuring Charges |
Schedule of restructuring accrual activities |
|  |  |  | Personnel |  |  |  |  |  |  |  |  |
|  |  |  | Severance and |  |  |  | Facility |  |  |  |  |
|  |  |  | Related Costs |  |  |  | Related Costs |  |  |  | Total |
|  |  |  | (in thousands) |  |  |
Balance at December 31, 2013 |  | $ | 533 |  | $ | — |  | $ | 533 |
Provision |  | 4,012 |  | 382 |  | 4,394 |
Payments |  | (3,117 | ) | (382 | ) | (3,499 | )
Balance at December 31, 2014 |  | 1,428 |  | — |  | 1,428 |
Provision |  | 3,513 |  | 1,166 |  | 4,679 |
Payments |  | (4,117 | ) | (1,166 | ) | (5,283 | )
Balance at December 31, 2015 |  | 824 |  | — |  | 824 |
Provision |  | 4,544 |  | 1,098 |  | 5,642 |
Changes in estimate |  | (2 | ) | — |  | (2 | )
Payments |  | (3,570 | ) | (1,098 | ) | (4,668 | )
Balance at December 31, 2016 |  | $ | 1,796 |  | $ | — |  | $ | 1,796 |

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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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