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Restructuring Charges (Tables) | 6 Months Ended
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Jun. 30, 2018
Restructuring Charges [Abstract] |
Restructuring and Related Costs [Table Text Block] | The following table summarizes the details of changes in our restructuring-related accrual for the period ended June 30, 2018 (in thousands):
| Accrued Balance December 31, 2017 |  | Charges Incurred |  | Payments |  | Other Adjustments |  | Accrued Balance June 30, 2018
Severance pay and benefits | $ | 915 |  |  | $ | 2,345 |  |  | $ | (2,611 | ) |  | $ | — |  |  | $ | 649 |
Employment agreement buyout | 1,114 |  |  | — |  |  | (191 | ) |  | (4 | ) |  | 919 |
Facility closure expenses | — |  |  | 160 |  |  | (160 | ) |  | — |  |  | — |
| $ | 2,029 |  |  | $ | 2,505 |  |  | $ | (2,962 | ) |  | $ | (4 | ) |  | $ | 1,568 |

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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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