Costs Associated with Exit and Restructuring Activities - Additional Information (Details) $ in Thousands	12 Months Ended			19 Months Ended	21 Months Ended	31 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 USD ($) position	Dec. 31, 2015 position	Dec. 31, 2015 position
Restructuring charges
Restructuring Charges	$ 4,139	$ 3,048	$ 14,564
June 2013 Plan April 2014 Plan and June 2016 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	4,139	3,048	15,195
June 2013 Plan April 2014 Plan and June 2016 Plan | Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0	0	631
June 2013 Plan April 2014 Plan and June 2016 Plan | Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	4,139	3,048	14,564
June2016 Plan
Restructuring charges
Elimination of workforce | position				230
June2016 Plan | Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	13,400			$ 13,400
Restructuring charges
Restructuring Charges	4,139	3,048
June2016 Plan | Workforce reduction | Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	3,075			3,075
April 2014 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	9,950			9,950
Restructuring charges
Restructuring Charges	0	$ 4,923
Elimination of workforce | position					120
April 2014 Plan | Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	4,050			4,050
April 2014 Plan | Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	5,900			5,900
April 2014 Plan | Other charges, including pension termination costs | Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	1,700			1,700
April 2014 Plan | Workforce reduction | Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	4,200			4,200
June 2013 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	22,600			22,600
Restructuring charges
Restructuring Charges			$ 10,272
June 2013 Plan | Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	1,800			1,800
June 2013 Plan | Other charges, including pension termination costs | Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	7,650			7,650
June 2013 Plan | Workforce reduction
Restructuring charges
Elimination of workforce | position						480
June 2013 Plan | Workforce reduction | Operating Expense
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 10,150			$ 10,150