Legal Proceedings (Details) - USD ($) $ in Millions			9 Months Ended
	Jul. 10, 2018	Jan. 18, 2017	Sep. 30, 2017	Sep. 30, 2018
Loss Contingencies [Line Items]
Product liability insurance, amount per incident				$ 30.0
Product liability insurance, aggregate annual amount				$ 30.0
Loss Contingency, Damages Paid, Value	$ 12.3
Lexion Alleged Lost Profits [Member]
Loss Contingencies [Line Items]
Damages sought			$ 22.0
Lexion Costs Related to Alleged Corrective Advertising [Member]
Loss Contingencies [Line Items]
Damages sought			18.7
Pending Litigation [Member] | EndoDynamix, Inc. [Member]
Loss Contingencies [Line Items]
Damages sought		$ 12.7
SurgiQuestInc | Selling and Administrative Expenses [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value			12.2
Compensatory damages [Member] | SurgiQuestInc | Selling and Administrative Expenses [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value			2.2
Punitive damages [Member] | SurgiQuestInc | Selling and Administrative Expenses [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value			$ 10.0