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Contingencies (Details) - 12 months ended Dec. 31, 2016 € in Thousands, $ in Thousands | USD ($) | EUR (€)
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Site Contingency [Line Items] |  |
Recovery of Direct Costs | $ 37,000 |
Huntsville Site [Member] |  |
Site Contingency [Line Items] |  |
Environmental Remediation Expense To Date | 5,500 |
Additional Expected Project Expenditures Low Estimate | 3,000 |
Additional Expected Project Expenditures High Estimate | 4,000 |
Groundwater Removal [Member] | Norco Site [Member] |  |
Site Contingency [Line Items] |  |
Environmental Remediation Expense To Date | 54,000 |
Additional Expected Project Expenditures Low Estimate | 21,000 |
Additional Expected Project Expenditures High Estimate | 31,700 |
Investigation Report [Member] | Huntsville Site [Member] |  |
Site Contingency [Line Items] |  |
Additional Expected Project Expenditures Low Estimate | 300 |
Additional Expected Project Expenditures High Estimate | $ 700 |
Tekelec Matter [Member] |  |
Site Contingency [Line Items] |  |
Loss Contingency, Range of Possible Loss, Maximum | € |  | € 11,333
Loss Contingency Damages Sought Value | € |  | 3,742
Loss Contingency, Expenses Sought, Value | € |  | € 312

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