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Restructuring Charges Schedule of Restructuring and Related Costs (Tables) | 12 Months Ended
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Dec. 31, 2017
Restructuring and Related Activities [Abstract] |
Restructuring and Related Costs [Table Text Block] | The following table summarizes the activity for the restructuring-related charges discussed above and related accrual (in thousands):
| Accrued Balance December 31, 2015 |  | Charges incurred |  | Payments |  | Currency Translation |  | Other Adjustments |  | Accrued Balance December 31, 2016 |  | Charges incurred |  | Payments |  | Other Adjustments |  | Accrued Balance December 31, 2017
Severance pay and benefits | $ | 2,505 |  |  | $ | 25 |  |  | $ | (2,683 | ) |  | $ | 77 |  |  | $ | 129 |  |  | $ | 53 |  |  | $ | 15,983 |  |  | $ | (15,104 | ) |  | $ | (17 | ) |  | $ | 915 |
Government incentive repayment | 1,884 |  |  | — |  |  | (1,769 | ) |  | 57 |  |  | (172 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Employment agreement buyout | 1,845 |  |  | — |  |  | (368 | ) |  | — |  |  | — |  |  | 1,477 |  |  | — |  |  | (363 | ) |  | — |  |  | 1,114 |
Other corporate restructuring | 305 |  |  | 168 |  |  | (468 | ) |  | — |  |  | (5 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Retention and facility closure expenses | — |  |  | 581 |  |  | (581 | ) |  | — |  |  | — |  |  | — |  |  | 2,789 |  |  | (2,789 | ) |  | — |  |  | — |
| $ | 6,539 |  |  | $ | 774 |  |  | $ | (5,869 | ) |  | $ | 134 |  |  | $ | (48 | ) |  | $ | 1,530 |  |  | $ | 18,772 |  |  | $ | (18,256 | ) |  | $ | (17 | ) |  | $ | 2,029 |

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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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