Restructuring (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Selling, General and Administrative Expenses [Member]
Summary of activity for liabilities [Roll Forward]
Abandonment of equipment charge	$ 3,700
EBOL Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	40
Inception to Date Costs Incurred	9,726
Termination Benefits [Member] | EBOL Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	40
Inception to Date Costs Incurred	5,286
Summary of activity for liabilities [Roll Forward]
Balance, beginning of period	4,357
Expenses incurred	40
Amount paid	(3,602)
Other adjustments	0
Balance, end of period	795
Other Costs [Member] | EBOL Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	0
Inception to Date Costs Incurred	691
Abandonment of Equipment [Member] | EBOL Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2017	0
Inception to Date Costs Incurred	$ 3,749