Revenues - Disaggregation of Revenue (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) segment item	Sep. 30, 2019 USD ($)
Disaggregation of Revenue [Line Items]
Number of operating segments | segment			2
Net sales	$ 243,975	$ 243,049	$ 705,871	$ 736,930
United States
Disaggregation of Revenue [Line Items]
Net sales	143,109	144,011	402,305	426,730
International
Disaggregation of Revenue [Line Items]
Net sales	100,866	99,038	$ 303,566	310,200
Cardiovascular
Disaggregation of Revenue [Line Items]
Number of product categories | item			4
Net sales	236,413	234,426	$ 684,134	711,570
Cardiovascular | Peripheral Intervention
Disaggregation of Revenue [Line Items]
Net sales	86,778	84,265	246,488	257,744
Cardiovascular | Cardiac Intervention
Disaggregation of Revenue [Line Items]
Net sales	69,089	74,859	207,685	227,042
Cardiovascular | Custom Procedural Solutions
Disaggregation of Revenue [Line Items]
Net sales	56,429	46,258	149,369	139,335
Cardiovascular | OEM
Disaggregation of Revenue [Line Items]
Net sales	24,117	29,044	80,592	87,449
Cardiovascular | United States
Disaggregation of Revenue [Line Items]
Net sales	136,016	135,671	381,796	402,271
Cardiovascular | United States | Peripheral Intervention
Disaggregation of Revenue [Line Items]
Net sales	55,014	55,587	153,431	167,158
Cardiovascular | United States | Cardiac Intervention
Disaggregation of Revenue [Line Items]
Net sales	28,661	29,657	79,954	85,817
Cardiovascular | United States | Custom Procedural Solutions
Disaggregation of Revenue [Line Items]
Net sales	32,048	24,906	80,845	73,871
Cardiovascular | United States | OEM
Disaggregation of Revenue [Line Items]
Net sales	20,293	25,521	67,566	75,425
Cardiovascular | International
Disaggregation of Revenue [Line Items]
Net sales	100,397	98,755	302,338	309,299
Cardiovascular | International | Peripheral Intervention
Disaggregation of Revenue [Line Items]
Net sales	31,764	28,678	93,057	90,586
Cardiovascular | International | Cardiac Intervention
Disaggregation of Revenue [Line Items]
Net sales	40,428	45,202	127,731	141,225
Cardiovascular | International | Custom Procedural Solutions
Disaggregation of Revenue [Line Items]
Net sales	24,381	21,352	68,524	65,464
Cardiovascular | International | OEM
Disaggregation of Revenue [Line Items]
Net sales	3,824	3,523	13,026	12,024
Endoscopy
Disaggregation of Revenue [Line Items]
Net sales	7,562	8,623	21,737	25,360
Endoscopy | Endoscopy Devices
Disaggregation of Revenue [Line Items]
Net sales	7,562	8,623	21,737	25,360
Endoscopy | United States | Endoscopy Devices
Disaggregation of Revenue [Line Items]
Net sales	7,093	8,340	20,509	24,459
Endoscopy | International | Endoscopy Devices
Disaggregation of Revenue [Line Items]
Net sales	$ 469	$ 283	$ 1,228	$ 901