Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Thousands								12 Months Ended
	May 23, 2018	Feb. 14, 2018	Oct. 02, 2017	Aug. 04, 2017	Jul. 03, 2017	May 01, 2017	Jan. 31, 2017	Dec. 31, 2017	Dec. 31, 2019	Aug. 01, 2019	Jun. 14, 2019	Dec. 31, 2018	Dec. 14, 2018	Nov. 13, 2018
Assets Acquired
Goodwill								$ 238,147	$ 353,193			$ 335,433
Liabilities Assumed
Gain on bargain purchase								$ (11,039)
Fibrovein Holdings Limited
Assets Acquired
Trade receivables										$ 277
Inventories										843
Prepaid expenses and other assets										49
Goodwill										4,975
Total assets acquired										16,572
Liabilities Assumed
Trade payables										(53)
Accrued expenses										(29)
Deferred income tax liabilities										(1,890)
Total liabilities assumed										(1,972)
Total net assets acquired										14,600
Fibrovein Holdings Limited | Developed technology
Assets Acquired
Intangibles										$ 10,428
Brightwater
Assets Acquired
Trade receivables											$ 55
Inventories											349
Property and equipment											409
Other long-term assets											30
Goodwill											17,492
Total assets acquired											50,628
Liabilities Assumed
Trade payables											(58)
Accrued expenses											(261)
Other long-term liabilities											(1,522)
Deferred income tax liabilities											(4,148)
Total liabilities assumed											(5,989)
Total net assets acquired											44,639
Brightwater | Developed technology
Assets Acquired
Intangibles											31,960
Brightwater | Customer Lists
Assets Acquired
Intangibles											83
Brightwater | Trademarks
Assets Acquired
Intangibles											$ 250
Vascular Insights
Assets Acquired
Inventories													$ 1,353
Goodwill													21,832
Total assets acquired													58,185
Vascular Insights | Developed technology
Assets Acquired
Intangibles													32,750
Vascular Insights | Customer Lists
Assets Acquired
Intangibles													840
Vascular Insights | Trademarks
Assets Acquired
Intangibles													$ 1,410
Cianna Medical
Assets Acquired
Trade receivables														$ 6,151
Inventories														5,803
Prepaid expenses and other assets														315
Property and equipment														1,047
Other long-term assets														14
Goodwill														61,379
Total assets acquired														219,629
Liabilities Assumed
Trade payables														(1,497)
Accrued expenses														(2,384)
Other long-term liabilities														(1,527)
Deferred income tax liabilities														(25,940)
Total liabilities assumed														(31,348)
Total net assets acquired														188,281
Cianna Medical | Developed technology
Assets Acquired
Intangibles														134,510
Cianna Medical | Customer Lists
Assets Acquired
Intangibles														3,330
Cianna Medical | Trademarks
Assets Acquired
Intangibles														$ 7,080
DirectACCESS Medical, LLC
Assets Acquired
Inventories	$ 971
Goodwill	938
Total assets acquired	7,269
Liabilities Assumed
Total purchase price	7,300
DirectACCESS Medical, LLC | Developed technology
Assets Acquired
Intangibles	4,840
DirectACCESS Medical, LLC | Customer Lists
Assets Acquired
Intangibles	120
DirectACCESS Medical, LLC | Trademarks
Assets Acquired
Intangibles	$ 400
Becton, Dickinson and Company
Assets Acquired
Inventories		$ 5,804
Property and equipment		748
Goodwill		9,728
Total assets acquired		101,880
Liabilities Assumed
Total purchase price		100,300
Becton, Dickinson and Company | Developed technology
Assets Acquired
Intangibles		74,000
Becton, Dickinson and Company | Customer Lists
Assets Acquired
Intangibles		4,200
Becton, Dickinson and Company | Trademarks
Assets Acquired
Intangibles		4,900
Becton, Dickinson and Company | In-process technology
Assets Acquired
Intangibles		$ 2,500
ITL Healthcare Pty Ltd
Assets Acquired
Trade receivables			$ 1,287
Other receivables			56
Inventories			1,808
Prepaid expenses and other assets			65
Property and equipment			1,053
Goodwill			3,945
Total assets acquired			14,154
Liabilities Assumed
Trade payables			(216)
Accrued expenses			(747)
Deferred income tax liabilities			(1,901)
Total liabilities assumed			(2,864)
Total net assets acquired			11,290
Total purchase price			11,300
ITL Healthcare Pty Ltd | Customer Lists
Assets Acquired
Intangibles			$ 5,940
Laurane Medical S.A.S.
Assets Acquired
Inventories				$ 594
Goodwill				6,366
Total assets acquired				22,000
Liabilities Assumed
Total purchase price				16,500
Laurane Medical S.A.S. | Developed technology
Assets Acquired
Intangibles				14,920
Laurane Medical S.A.S. | Customer Lists
Assets Acquired
Intangibles				$ 120
Osseon LLC
Assets Acquired
Inventories					$ 979
Property and equipment					58
Goodwill					203
Total assets acquired					6,840
Liabilities Assumed
Total purchase price					6,800
Osseon LLC | Developed technology
Assets Acquired
Intangibles					5,400
Osseon LLC | Customer Lists
Assets Acquired
Intangibles					$ 200
Vascular Access Technologies, Inc.
Assets Acquired
Goodwill						$ 4,281
Liabilities Assumed
Deferred income tax liabilities						(3,101)
Total net assets acquired						9,900
Total purchase price						5,000
Vascular Access Technologies, Inc. | Developed technology
Assets Acquired
Intangibles						7,800
Vascular Access Technologies, Inc. | In-process technology
Assets Acquired
Intangibles						$ 920
Argon Medical Devices, Inc.
Assets Acquired
Cash and cash equivalents							$ 1,436
Trade receivables							8,351
Inventories							11,222
Prepaid expenses and other assets							1,275
Income tax refund receivable							165
Property and equipment							2,319
Deferred tax assets							202
Total assets acquired							29,570
Liabilities Assumed
Trade payables							(2,414)
Accrued expenses							(5,083)
Deferred income tax liabilities							(934)
Total liabilities assumed							(8,431)
Total net assets acquired							21,139
Gain on bargain purchase							(11,039)
Total purchase price							10,100
Argon Medical Devices, Inc. | Preliminary Allocation
Liabilities Assumed
Total purchase price							10,900
Argon Medical Devices, Inc. | Developed technology
Assets Acquired
Intangibles							2,200
Argon Medical Devices, Inc. | Customer Lists
Assets Acquired
Intangibles							1,500
Argon Medical Devices, Inc. | Trademarks
Assets Acquired
Intangibles							900
Catheter Connections, Inc.
Assets Acquired
Trade receivables							958
Inventories							2,157
Prepaid expenses and other assets							85
Property and equipment							1,472
Goodwill							8,989
Total assets acquired							38,361
Liabilities Assumed
Trade payables							(338)
Accrued expenses							(23)
Total liabilities assumed							(361)
Total net assets acquired							38,000
Total purchase price							38,000
Catheter Connections, Inc. | Developed technology
Assets Acquired
Intangibles							21,100
Catheter Connections, Inc. | Customer Lists
Assets Acquired
Intangibles							700
Catheter Connections, Inc. | Trademarks
Assets Acquired
Intangibles							$ 2,900