Acquisition, Restructuring and Other Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges									$ 9,939	$ 21,671	$ 21,512
Proceeds from Sale of Buildings		$ 5,200							5,200
Debt Instrument, Financing Costs Expensed				$ 2,700					2,700
Gain on sale of facility									(1,890)	0	0
Loss on early extinguishment of debt				300					254	0	0
Other expense									2,942	0	0
Legal Fees [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Legal Fees											1,500
Patent Dispute and Other Matters [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Settlement cost											900
Patent Infringement [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Legal Fees											1,900
Cost of Sales [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges									7,612	8,016	5,612
Cost of Sales [Member] | Facility Consolidation Costs [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges	$ 2,100		$ 100	900	$ 2,800	$ 1,300	$ 1,500	$ 2,300	3,066	8,016	5,612
Cost of Sales [Member] | Termination of Product Offering [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges			4,500						4,546	0	0
Selling and Administrative Expenses [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Business and asset acquisition costs					2,100				20,599	2,543	722
Gain on sale of facility		1,900							(1,890)	0	0
Restructuring and other expense									25,582	16,198	23,962
Selling and Administrative Expenses [Member] | Shareholder Activism Costs [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Professional fees									0	0	3,966
Selling and Administrative Expenses [Member] | Patent Dispute and Other Matters [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Legal Fees									0	0	3,374
Selling and Administrative Expenses [Member] | Administrative Restructuring [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges	$ 2,800	$ 400	$ 1,000	$ 2,800	$ 4,300	$ 1,100	$ 2,200	$ 6,200	6,873	13,655	3,354
Selling and Administrative Expenses [Member] | Executive Restructuring [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges									0	0	12,546
Other Expense [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Other expense									$ 2,942	$ 0	$ 0