Contingencies (Details) - 12 months ended Dec. 31, 2016 € in Thousands, $ in Thousands	USD ($)	EUR (€)
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