Segment Information - Additional Information (Details) - item	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Number of reporting segments	2
Net sales | Customer concentration | Airbus and its subcontractors
Segment Reporting Information [Line Items]
Concentration percentage (as a percent)	44.00%	41.00%	35.00%
Net sales | Customer concentration | Airbus and its subcontractors | Commercial Aerospace Market Applications
Segment Reporting Information [Line Items]
Concentration percentage (as a percent)	40.00%
Net sales | Customer concentration | Airbus and its subcontractors | Space & Defense Market Applications
Segment Reporting Information [Line Items]
Concentration percentage (as a percent)	4.00%
Net sales | Customer concentration | Airbus and its subcontractors | Composite Materials
Segment Reporting Information [Line Items]
Concentration percentage (as a percent)	50.00%	48.00%	42.00%
Net sales | Customer concentration | Boeing company and its subcontractors
Segment Reporting Information [Line Items]
Concentration percentage (as a percent)	25.00%	28.00%	31.00%
Net sales | Customer concentration | Boeing company and its subcontractors | Commercial Aerospace Market Applications
Segment Reporting Information [Line Items]
Concentration percentage (as a percent)	23.00%
Net sales | Customer concentration | Boeing company and its subcontractors | Space & Defense Market Applications
Segment Reporting Information [Line Items]
Concentration percentage (as a percent)	2.00%
Net sales | Customer concentration | Boeing company and its subcontractors | Composite Materials
Segment Reporting Information [Line Items]
Concentration percentage (as a percent)	16.00%	17.00%	21.00%
Net sales | Customer concentration | Boeing company and its subcontractors | Engineered Products
Segment Reporting Information [Line Items]
Concentration percentage (as a percent)	64.00%	69.00%	71.00%