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Restructuring - Restructuring Costs (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2019 | Jun. 30, 2018
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | $ 12,623 | $ 12,623 | $ 0
Write-off of equipment and facility |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | 7,131 |  |
Employee separations |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | 2,686 |  |
Facility exit costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | 1,364 |  |
Inventory write-downs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | $ 1,442 |  |

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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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