Acquisitions - Narrative (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended		5 Months Ended	6 Months Ended
	Aug. 08, 2014	Jan. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
Payments to acquire intangible assets			$ 1,000	$ 1,000	$ 3,000	$ 875	$ 925
Acquisition purchases in accrued expenses			1,500	1,000		1,500	$ 0
License agreements and trademarks
Business Acquisition [Line Items]
Intangible assets purchased			9,274		7,172	9,274
Useful life	12 years
Distribution agreements
Business Acquisition [Line Items]
Intangible assets purchased			3,068		3,091	3,068
Useful life	3 years
Intangible assets	$ 200
Developed technology
Business Acquisition [Line Items]
Intangible assets purchased			$ 73,679		$ 79,172	$ 73,679
Intangible assets	$ 6,300
Catheter Connections, Inc. [Member] | Distribution agreements
Business Acquisition [Line Items]
Payments to acquire intangible assets		$ 250
Intangible assets purchased				$ 250
Useful life				10 years