Restructuring and Other Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Restructuring and Other Expense [Line Items]
Restructuring costs			$ 4,449
Acquisition related costs		$ 300		$ 400
Completion period (in months)	3 months
Restructuring reserve	$ 5,187		5,187		$ 8,254
Cost of Sales [Member] | Facility Consolidation Costs [Member]
Restructuring and Other Expense [Line Items]
Restructuring costs	1,316	1,448	5,179	3,754
Selling and Administrative Expenses [Member]
Restructuring and Other Expense [Line Items]
Restructuring and other expense included in selling and administrative expense	1,331	14,484	9,795	20,520
Legal fees				1,300
Selling and Administrative Expenses [Member] | Patent Dispute and Other Matters [Member]
Restructuring and Other Expense [Line Items]
Professional fees	0	334	0	3,677
Selling and Administrative Expenses [Member] | Shareholder Activism Costs [Member]
Restructuring and Other Expense [Line Items]
Professional fees	0	2,441	0	3,966
Selling and Administrative Expenses [Member] | Patent Infringement [Member]
Restructuring and Other Expense [Line Items]
Legal fees				1,900
Settlement costs				900
Selling and Administrative Expenses [Member] | Administrative Restructuring [Member]
Restructuring and Other Expense [Line Items]
Restructuring costs	1,331	687	9,795	1,855
Selling and Administrative Expenses [Member] | Executive Severance [Member]
Restructuring and Other Expense [Line Items]
Restructuring costs	$ 0	$ 11,022	$ 0	$ 11,022