Revenue from Contracts with Customers - Disaggregation of Revenue (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) item segment	Mar. 31, 2020 USD ($)
Disaggregation of Revenue [Line Items]
Number of operating segments | segment	2
Net sales	$ 248,913	$ 243,525
United States
Disaggregation of Revenue [Line Items]
Net sales	141,372	141,056
International
Disaggregation of Revenue [Line Items]
Net sales	$ 107,541	102,469
Cardiovascular
Disaggregation of Revenue [Line Items]
Number of product categories | item	4
Net sales	$ 241,006	235,544
Cardiovascular | Peripheral Intervention
Disaggregation of Revenue [Line Items]
Net sales	92,914	87,075
Cardiovascular | Cardiac Intervention
Disaggregation of Revenue [Line Items]
Net sales	74,737	72,591
Cardiovascular | Custom Procedural Solutions
Disaggregation of Revenue [Line Items]
Net sales	45,421	47,621
Cardiovascular | OEM
Disaggregation of Revenue [Line Items]
Net sales	27,934	28,257
Cardiovascular | United States
Disaggregation of Revenue [Line Items]
Net sales	133,899	133,478
Cardiovascular | United States | Peripheral Intervention
Disaggregation of Revenue [Line Items]
Net sales	56,866	55,803
Cardiovascular | United States | Cardiac Intervention
Disaggregation of Revenue [Line Items]
Net sales	29,251	28,595
Cardiovascular | United States | Custom Procedural Solutions
Disaggregation of Revenue [Line Items]
Net sales	24,892	25,414
Cardiovascular | United States | OEM
Disaggregation of Revenue [Line Items]
Net sales	22,890	23,666
Cardiovascular | International
Disaggregation of Revenue [Line Items]
Net sales	107,107	102,066
Cardiovascular | International | Peripheral Intervention
Disaggregation of Revenue [Line Items]
Net sales	36,048	31,272
Cardiovascular | International | Cardiac Intervention
Disaggregation of Revenue [Line Items]
Net sales	45,486	43,996
Cardiovascular | International | Custom Procedural Solutions
Disaggregation of Revenue [Line Items]
Net sales	20,529	22,207
Cardiovascular | International | OEM
Disaggregation of Revenue [Line Items]
Net sales	5,044	4,591
Endoscopy
Disaggregation of Revenue [Line Items]
Net sales	7,907	7,981
Endoscopy | Endoscopy Devices
Disaggregation of Revenue [Line Items]
Net sales	7,907	7,981
Endoscopy | United States | Endoscopy Devices
Disaggregation of Revenue [Line Items]
Net sales	7,473	7,578
Endoscopy | International | Endoscopy Devices
Disaggregation of Revenue [Line Items]
Net sales	$ 434	$ 403