Restructuring and Other Expense (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Restructuring and Other Expense [Line Items]
Restructuring costs	$ 2,794,000
Completion period	9 months
Cost of Sales [Member] | Facility Consolidation Costs [Member]
Restructuring and Other Expense [Line Items]
Restructuring costs	2,329,000	948,000
Selling and Administrative Expenses [Member]
Restructuring and Other Expense [Line Items]
Restructuring costs	6,180,000	713,000
Patent dispute and shareholder activism costs	0	2,484,000
Restructuring and other expense included in selling and administrative expense	6,180,000	3,197,000
Professional Fees		600,000
Selling and Administrative Expenses [Member] | Patent Infringement [Member]
Restructuring and Other Expense [Line Items]
Patent dispute and shareholder activism costs		1,900,000
Settlement costs		$ 900,000