Acquisition, Restructuring and Other Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges									$ 4,250	$ 9,736	$ 21,671
Proceeds from Sale of Buildings						$ 5,200				5,200
Legal Fees									5,300	3,800
Gain on sale of facility									0	(1,890)	0
Other expense									0	2,942	0
Debt Instrument, Financing Costs Expensed								$ 2,700		2,700
Loss on early extinguishment of debt								300	0	254	0
Cost of Sales [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges									2,903	7,612	8,016
Cost of Sales [Member] | Consolidation Costs [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges	$ 100	$ 1,300	$ 300	$ 1,200	$ 2,100		$ 100	900	2,903	3,066	8,016
Cost of Sales [Member] | Product Offering Consolidation [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges									1,300
Cost of Sales [Member] | Termination of Product Offering [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges							4,500		0	4,546	0
Selling and Administrative Expenses [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Business and asset acquisition costs									2,336	17,029	2,543
Legal Fees	400	300	2,500	2,000	1,000	600	1,400	800	17,480	3,773	0
Gain on sale of facility						(1,900)			0	(1,890)	0
Acquisition, restructuring and other expense									21,163	25,582	16,198
Selling and Administrative Expenses [Member] | Administrative Restructuring [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Restructuring charges				1,300	2,600	400	1,000	2,800	1,347	6,670	13,655
Other Expense [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Other expense									0	$ 2,942	$ 0
SurgiQuestInc [Member] | Selling and Administrative Expenses [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Business and asset acquisition costs	$ 1,300	$ 100	$ 400	500	$ 2,500	$ 2,700	$ 3,600	$ 8,200
Loss Contingency, Damages Awarded, Value				12,200					12,200
Compensatory damages [Member] | SurgiQuestInc [Member] | Selling and Administrative Expenses [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Loss Contingency, Damages Awarded, Value				2,200					2,200
Punitive damages [Member] | SurgiQuestInc [Member] | Selling and Administrative Expenses [Member]
Acquisition, Restructuring and Other Expense [Line Items]
Loss Contingency, Damages Awarded, Value				$ 10,000					$ 10,000