Acquisitions - Narrative (Details) (USD $)	3 Months Ended								12 Months Ended			0 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended		0 Months Ended	1 Months Ended		12 Months Ended		0 Months Ended	1 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended		0 Months Ended			12 Months Ended				0 Months Ended	3 Months Ended		1 Months Ended			12 Months Ended			0 Months Ended								12 Months Ended				3 Months Ended				12 Months Ended					0 Months Ended			1 Months Ended				0 Months Ended	1 Months Ended				12 Months Ended				12 Months Ended		0 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 19, 2012 Thomas Medical Products, Inc	Dec. 31, 2013 Thomas Medical Products, Inc	Dec. 31, 2012 Thomas Medical Products, Inc	Nov. 19, 2012 MediGroup	Dec. 31, 2013 MediGroup	Dec. 31, 2012 MediGroup	Jan. 31, 2012 Ostial Solutions, LLC	Aug. 31, 2012 Ostial Solutions, LLC	Jan. 31, 2012 Ostial Solutions, LLC	Dec. 31, 2013 Ostial Solutions, LLC	Dec. 31, 2012 Ostial Solutions, LLC	Sep. 02, 2011 Ash	Sep. 30, 2011 Ash	Dec. 31, 2013 Ash	Dec. 31, 2012 Ash	Oct. 04, 2013 Datascope	Dec. 31, 2013 Datascope	Dec. 31, 2013 Radial Assist	Apr. 06, 2011 Developed technology	Dec. 31, 2013 Developed technology	Dec. 31, 2012 Developed technology	Dec. 31, 2013 Developed technology Thomas Medical Products, Inc	Dec. 31, 2013 Developed technology MediGroup	Dec. 31, 2013 Developed technology Ostial Solutions, LLC	Dec. 31, 2013 Developed technology Ash	Sep. 10, 2010 Developed technology BioSphere	Dec. 31, 2010 Developed technology Datascope	Dec. 31, 2010 Developed technology Radial Assist	Aug. 31, 2011 Developed Technology Rights, Acquired in August 2011, Two	Dec. 31, 2013 Non-compete agreements	Dec. 31, 2012 Non-compete agreements	Dec. 31, 2013 Non-compete agreements Thomas Medical Products, Inc	Dec. 31, 2013 Non-compete agreements MediGroup	Dec. 31, 2013 Non-compete agreements Ostial Solutions, LLC	Dec. 20, 2013 License agreements and trademarks	Sep. 10, 2013 License agreements and trademarks	Dec. 31, 2013 License agreements and trademarks	Dec. 31, 2012 License agreements and trademarks	Sep. 10, 2010 License agreements and trademarks	Dec. 31, 2013 Customer Lists	Dec. 31, 2012 Customer Lists	Jan. 05, 2012 Customer Lists	Dec. 31, 2013 Customer Lists Thomas Medical Products, Inc	Dec. 31, 2013 Customer Lists MediGroup	Dec. 31, 2013 Customer Lists Ostial Solutions, LLC	Dec. 31, 2013 Customer Lists Ash	Dec. 31, 2010 Customer Lists Datascope	Dec. 31, 2010 Customer Lists Radial Assist	Dec. 31, 2013 Trademarks	Dec. 31, 2012 Trademarks	Dec. 31, 2013 Trademarks Thomas Medical Products, Inc	Dec. 31, 2013 Trademarks MediGroup	Dec. 31, 2013 Trademarks Ostial Solutions, LLC	Dec. 31, 2013 Trademarks Datascope	Dec. 31, 2013 Trademarks Radial Assist	Aug. 27, 2012 License Agreement Terms	Aug. 21, 2012 Distribution agreements	Jan. 05, 2012 Distribution agreements	May 31, 2012 Distribution agreements	Jan. 31, 2012 Distribution agreements	Dec. 31, 2013 Distribution agreements	Dec. 31, 2012 Distribution agreements	Aug. 07, 2012 Blockade Medical LLC	May 31, 2012 Intellectual Property Rights	Dec. 31, 2011 Intellectual Property Rights	Jul. 31, 2011 Intellectual Property Rights	Jun. 30, 2011 Intellectual Property Rights	Dec. 31, 2012 Intellectual Property Rights	Dec. 15, 2011 Intellectual Property Rights	Jul. 18, 2011 Intellectual Property Rights	Jun. 20, 2011 Intellectual Property Rights	Dec. 31, 2012 Development of Biomaterial Technology	Dec. 31, 2012 Covered Biliary In-Process Research and Development	Dec. 19, 2012 Wells Fargo Credit Agreement	Sep. 10, 2010 Wells Fargo Credit Agreement	Aug. 07, 2012 Special Membership Units Blockade Medical LLC
Business Acquisition [Line Items]
Revenues	$ 120,016,000	$ 115,210,000	$ 109,875,000	$ 103,948,000	$ 102,231,000	$ 95,907,000	$ 100,532,000	$ 95,618,000	$ 449,049,000	$ 394,288,000	$ 359,449,000
Payments to acquire businesses												167,000,000			4,000,000				6,500,000	10,000,000				5,000,000			27,500,000		2,500,000
Income before tax														51,000														1,600,000	191,000
Useful life																														10 years			8 years	8 years	15 years	15 years		10 years	10 years				3 years	7 years	5 years	4 years	10 years							12 years	8 years	8 years	2 years	6 years	6 years			15 years	15 years	15 years	15 years	15 years	3 years	10 years	12 years
Weighted average useful life													8 years 6 months 18 days			8 years 1 month 24 days					14 years 7 months 6 days				9 years			10 years	10 years 0 months 27 days
Long-term debt issuance costs									798,000	3,706,000	0																																																																										3,700,000	798,000
Payments to acquire intangible assets									1,617,000	1,460,000	2,077,000																										500,000			500,000						350,000	250,000																				750,000	250,000		1,000,000	1,500,000
Accrued Liabilities, Current	27,702,000				27,269,000				27,702,000	27,269,000																																				350,000				250,000
Finite-Lived Intangible Assets, Gross																																									1,029,000	1,035,000				700,000	250,000	3,783,000	2,733,000		20,626,000	20,468,000								7,622,000	7,311,000											5,176,000	5,176,000
Accrued Liability, Current, Due Date in Relation to First Commercial Sale																																															30 days
Liabilities incurred														445,000
Net sales														1,900,000			169,000					457,000
Goodwill, Period Increase (Decrease)													381,000
Acquired receivables												6,500,000																									1,000,000
Estimated uncollectible trade receivables acquired												34,000
Acquisition-related costs													2,700,000
Contingent consideration, payment, 2013															150,000
Contingent consideration, payment, 2014															150,000
Contingent consideration, payment, 2015															150,000
Contingent consideration, potential payment, 2016															150,000
Contingent consideration, potential payment, 2017															150,000
Contingent consideration, potential payment, 2018															150,000
Contingent consideration, potential payment, 2019															150,000
Contingent consideration, potential payment, 2020															150,000
Contingent consideration, potential payment, 2021															150,000
Contingent consideration, potential payment, 2022															150,000
Potential payment, annual increase in net sales, minimum percent															8.00%
Contingent consideration, liability															403,000			4,300,000		4,300,000			1,300,000
Intangible assets purchased																															91,052,000	87,332,000									630,000	875,000						2,534,000	1,872,000		9,669,000	12,430,000	95,000							5,778,000	5,949,000						750,000	250,000	2,500,000			3,396,000	3,875,000
Contingent consideration, potential payment																		13,500,000					1,000,000																																													250,000
Cost method investments, special membership units																																																																																							422,594
Cost method investments, ownership percentage																																																																										11.90%
Payments to Acquire Investments																																																																										1,000,000
Acquired in-process research and development									0	2,450,000	5,838,000																																																																1,000,000	2,000,000	1,000,000	1,000,000	4,900,000				500,000	400,000
Adjustment related to previous acquisitions									381,000	280,000																280,000
Research and development, contingent consideration, liability																																																																																1,000,000	1,000,000	3,500,000
Research and development, contingent consideration, discounted liability																																																																												$ 968,000			$ 989,000