Restructuring - Additional Information (Details) $ in Thousands		3 Months Ended		12 Months Ended
	May 02, 2016 facility	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Nov. 19, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		$ 748	$ 273	$ 3,500	$ 800
North America
Restructuring Cost and Reserve [Line Items]
Number of facilities | facility	2
Edgewood Wire Harness
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		0		300	100
Piedmont Seating
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		0		900	100
Employee Costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		607	$ 208
Cost of Revenues | Employee Costs | Edgewood Wire Harness
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		0		200	100
Cost of Revenues | Employee Costs | Piedmont Seating
Restructuring Cost and Reserve [Line Items]
Restructuring costs incurred		$ 0		$ 500	$ 100
Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs						$ 7,600
Minimum | Capital Investments
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs						1,000
Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs						10,700
Maximum | Capital Investments
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs						$ 2,000