Restructuring - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	25 Months Ended
	Mar. 31, 2017	Dec. 31, 2017	Nov. 19, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred	$ 748	$ 6,000
Employee Costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred	607
Employee Costs | Monona Facility
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred	100
Employee Separation, Facility and Other Costs | Shadyside Stamping
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred	$ 600
Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs			$ 11,000
Minimum | Capital Investments
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs			1,000
Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs			16,000
Maximum | Capital Investments
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs			$ 2,000