Restructuring (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Summary of activity for liabilities [Roll Forward]
Impairment of idled equipment	$ 3,749	$ 0
Selling, General and Administrative Expenses [Member]
Summary of activity for liabilities [Roll Forward]
Impairment of idled equipment	3,700
EBOL Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2016	6,928
Inception to Date Costs Incurred	6,928
Total Expected to be Incurred	9,704
Termination benefits [Member] | EBOL Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2016	2,488
Inception to Date Costs Incurred	2,488
Total Expected to be Incurred	5,264
Summary of activity for liabilities [Roll Forward]
Balance, beginning of period	0
Expenses incurred	2,488
Amount paid	0
Other adjustments	0
Balance, end of period	2,488
Other costs [Member] | EBOL Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2016	691
Inception to Date Costs Incurred	691
Total Expected to be Incurred	691
Abandonment of Equipment [Member] | EBOL Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Incurred in 2016	3,749
Inception to Date Costs Incurred	3,749
Total Expected to be Incurred	$ 3,749