Acquisitions - Narrative (Details) $ in Millions																					1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 14, 2018 USD ($)	Nov. 13, 2018 USD ($)	Jul. 31, 2018 USD ($) shares	May 23, 2018 USD ($)	May 18, 2018 USD ($)	Apr. 06, 2018 USD ($)	Feb. 14, 2018 USD ($)	Oct. 02, 2017 USD ($)	Sep. 01, 2017	Aug. 04, 2017 USD ($)	Jul. 03, 2017 USD ($)	Jul. 01, 2017 USD ($)	Jun. 16, 2017 USD ($)	May 23, 2017 USD ($) shares	May 19, 2017 USD ($)	May 01, 2017 USD ($)	Jan. 31, 2017 USD ($) patent	Dec. 19, 2016 USD ($) shares	Jul. 06, 2016 USD ($)	Feb. 04, 2016 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2016 USD ($) shares	Dec. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($) shares	Sep. 30, 2017 AUD ($)
Business Acquisition [Line Items]
Payments to acquire intangible assets																								$ 3,012,000	$ 2,577,000	$ 2,217,000
Loan for long-term agreement																								10,750,000	0	0
QX Medical, LLC
Business Acquisition [Line Items]
Payments to acquire intangible assets					$ 750,000
NinePoint Medical, Inc.
Business Acquisition [Line Items]
Net sales related to acquisition																							$ 3,000,000.0
Option to purchase outstanding equity, up to						100.00%
Consideration received, option to purchase remaining equity						$ 10,000,000
Loan for long-term agreement						$ 10,500,000
Interest rate on loan						9.00%
Fusion Medical, Inc.
Business Acquisition [Line Items]
Ownership interest (percent)														19.50%
Total purchase price														$ 2,500,000
Equity method investment														$ 2,500,000
Fusion Medical, Inc. | Preferred Stock
Business Acquisition [Line Items]
Shares acquired (in shares) | shares														182,000
Sugan Co, Ltd.
Business Acquisition [Line Items]
Term of right to manufacture and sell certain products															4 years
Bluegrass Vascular Technologies, Inc. | Investee
Business Acquisition [Line Items]
Payments to acquire investment																		$ 5,000,000.0
Number of units acquired | shares																		1,251,878
Percent owned																		19.50%
Cost method investment																		$ 4,000,000.0
Cagent Vascular, LLC | Limited Liability Company
Business Acquisition [Line Items]
Payments to acquire investment																									$ 3,000,000	$ 3,000,000.0
Number of units acquired | shares																						3,000,000			3,000,000	3,000,000
Developed technology
Business Acquisition [Line Items]
Intangible assets																							383,147,000	383,147,000	$ 167,771,000
Customer Lists
Business Acquisition [Line Items]
Intangible assets																							16,575,000	16,575,000	13,453,000
Customer Lists | Sugan Co, Ltd.
Business Acquisition [Line Items]
Useful life															5 years
Consideration payable															$ 1,200,000
License agreements
Business Acquisition [Line Items]
Intangible assets																							19,519,000	19,519,000	18,215,000
License agreements | Pleuratech ApS
Business Acquisition [Line Items]
Useful life												15 years
Payments to acquire intangible assets																								2,000,000.0
Contingent liability												$ 5,000,000.0
Current royalty rate												6.00%
Intellectual Property | IntelliMedical Technologies Pty Ltd
Business Acquisition [Line Items]
Total purchase price																					$ 11,900,000
Contingent liability																											$ 15.0
Current royalty rate									6.00%
Intellectual Property | Lazarus Medical Technologies, LLC
Business Acquisition [Line Items]
Useful life													15 years
Payments to acquire intangible assets																								620,000
Contingent liability													$ 700,000
Current royalty rate													6.00%
Trademarks
Business Acquisition [Line Items]
Intangible assets																							23,412,000	23,412,000	11,538,000
Distribution agreements
Business Acquisition [Line Items]
Intangible assets																							$ 2,246,000	2,246,000	2,576,000
Distribution agreements | QX Medical, LLC
Business Acquisition [Line Items]
Useful life					10 years
Distribution agreements | Bluegrass Vascular Technologies, Inc. | Investee
Business Acquisition [Line Items]
Useful life																		3 years
Intangible assets																		$ 1,000,000.0
Cagent Vascular, LLC
Business Acquisition [Line Items]
Preferred limited liability company units (in units) | shares			1,786,000
Payments to purchase preferred limited liability company units			$ 2,200,000
Ownership interest (percent)			19.50%
Vascular Insights
Business Acquisition [Line Items]
Cash paid for merger at closing	$ 40,000,000
Weighted average useful life	11 years 9 months 18 days
Contingent liability	$ 20,000,000
Vascular Insights | Developed technology
Business Acquisition [Line Items]
Useful life	12 years
Vascular Insights | Customer Lists
Business Acquisition [Line Items]
Useful life	8 years
Vascular Insights | Trademarks
Business Acquisition [Line Items]
Useful life	9 years
Cianna Medical, Inc.
Business Acquisition [Line Items]
Cash paid for merger at closing		$ 135,000,000
Weighted average useful life		10 years 8 months 12 days
Net sales related to acquisition																								6,300,000
Acquisition-related costs																								3,500,000
Total purchase price		$ 1,000,000
Cianna Medical, Inc. | Developed technology
Business Acquisition [Line Items]
Useful life		11 years
Cianna Medical, Inc. | Customer Lists
Business Acquisition [Line Items]
Useful life		8 years
Cianna Medical, Inc. | Trademarks
Business Acquisition [Line Items]
Useful life		10 years
Cianna Medical, Inc. | Achievement of Supply Chain and Scalability Metrics
Business Acquisition [Line Items]
Earn-out payment payable upon certain milestones		$ 15,000,000
Cianna Medical, Inc. | Annual Net Sales Milestone
Business Acquisition [Line Items]
Earn-out payment payable upon certain milestones		$ 50,000,000
DirectACCESS Medical, LLC
Business Acquisition [Line Items]
Weighted average useful life				9 years 10 months 24 days
Total purchase price				$ 7,300,000
DirectACCESS Medical, LLC | Developed technology
Business Acquisition [Line Items]
Useful life				10 years
DirectACCESS Medical, LLC | Customer Lists
Business Acquisition [Line Items]
Useful life				5 years
DirectACCESS Medical, LLC | Trademarks
Business Acquisition [Line Items]
Useful life				10 years
Becton, Dickinson and Company
Business Acquisition [Line Items]
Weighted average useful life							8 years
Net sales related to acquisition																								42,100,000
Acquisition-related costs																								1,800,000
Total purchase price							$ 100,300,000
Contingent liability							$ 1,600,000
Becton, Dickinson and Company | Developed technology
Business Acquisition [Line Items]
Useful life							8 years
Becton, Dickinson and Company | Customer Lists
Business Acquisition [Line Items]
Useful life							7 years
Becton, Dickinson and Company | Trademarks
Business Acquisition [Line Items]
Useful life							9 years
ITL Healthcare Pty Ltd
Business Acquisition [Line Items]
Net sales related to acquisition																								8,000,000.0	3,300,000
Total purchase price								$ 11,300,000
ITL Healthcare Pty Ltd | Customer Lists
Business Acquisition [Line Items]
Useful life								7 years
Laurane Medical S.A.S.
Business Acquisition [Line Items]
Weighted average useful life										11 years 10 months 24 days
Total purchase price										$ 16,500,000
Contingent liability										$ 5,500,000
Laurane Medical S.A.S. | Developed technology
Business Acquisition [Line Items]
Useful life										12 years
Laurane Medical S.A.S. | Customer Lists
Business Acquisition [Line Items]
Useful life										1 year
Osseon LLC
Business Acquisition [Line Items]
Weighted average useful life											9 years
Net sales related to acquisition																								2,100,000	942,000
Total purchase price											$ 6,800,000
Osseon LLC | Developed technology
Business Acquisition [Line Items]
Useful life											9 years
Osseon LLC | Customer Lists
Business Acquisition [Line Items]
Useful life											8 years
Vascular Access Technologies, Inc.
Business Acquisition [Line Items]
Total purchase price																$ 5,000,000.0
Contingent liability																$ 4,900,000
Vascular Access Technologies, Inc. | Developed technology
Business Acquisition [Line Items]
Useful life																15 years
Argon Medical Devices, Inc.
Business Acquisition [Line Items]
Weighted average useful life																	6 years
Net sales related to acquisition																								45,500,000	41,200,000
Total purchase price																	$ 10,100,000
Total purchase price																	(797,000)
Argon Medical Devices, Inc. | Cardiovascular Segment
Business Acquisition [Line Items]
Acquisition-related costs																									2,600,000
Argon Medical Devices, Inc. | Previously Reported
Business Acquisition [Line Items]
Total purchase price																	$ 10,900,000
Argon Medical Devices, Inc. | Developed technology
Business Acquisition [Line Items]
Useful life																	7 years
Argon Medical Devices, Inc. | Customer Lists
Business Acquisition [Line Items]
Useful life																	5 years
Argon Medical Devices, Inc. | Trademarks
Business Acquisition [Line Items]
Useful life																	5 years
Catheter Connections, Inc.
Business Acquisition [Line Items]
Weighted average useful life																	11 years 8 months 12 days
Net sales related to acquisition																								13,700,000	10,000,000.0
Total purchase price																	$ 38,000,000.0
Number of patents acquired | patent																	40
Catheter Connections, Inc. | Cardiovascular Segment
Business Acquisition [Line Items]
Acquisition-related costs																									482,000
Catheter Connections, Inc. | Developed technology
Business Acquisition [Line Items]
Useful life																	12 years
Catheter Connections, Inc. | Customer Lists
Business Acquisition [Line Items]
Useful life																	8 years
Catheter Connections, Inc. | Trademarks
Business Acquisition [Line Items]
Useful life																	10 years
DFINE, Inc.
Business Acquisition [Line Items]
Weighted average useful life																			14 years 9 months 18 days
Net sales related to acquisition																								26,600,000	27,000,000.0	$ 13,500,000
Total purchase price																			$ 97,500,000
Total purchase price																						$ 1,100,000
Consideration paid related to net working capital adjustment																			578,000
Inventories																						89,000
Property and equipment																						109,000
Goodwill																						1,200,000
Measurement period adjustment, reduction in accrued expenses																						407,000
Measurement period adjustment, increase in deferred tax liabilities																						$ 113,000
Trade receivables acquired, gross																			4,300,000
Trade receivables, expected to be uncollectible																			$ 224,000
DFINE, Inc. | Cardiovascular Segment
Business Acquisition [Line Items]
Acquisition-related costs																										1,600,000
DFINE, Inc. | Developed technology
Business Acquisition [Line Items]
Useful life																			15 years
DFINE, Inc. | Customer Lists
Business Acquisition [Line Items]
Useful life																			9 years
DFINE, Inc. | Trademarks
Business Acquisition [Line Items]
Useful life																			15 years
HeRO®Graft
Business Acquisition [Line Items]
Weighted average useful life																				9 years 9 months 18 days
Total purchase price																				$ 18,500,000
Income since acquisition date																								$ 9,100,000	$ 8,600,000	$ 7,100,000
HeRO®Graft | Developed technology
Business Acquisition [Line Items]
Useful life																				10 years
HeRO®Graft | Customer Lists
Business Acquisition [Line Items]
Useful life																				12 years
HeRO®Graft | Trademarks
Business Acquisition [Line Items]
Useful life																				5 years 6 months