Revenues - Disaggregation of Revenue (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2020 USD ($) segment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Number of operating segments | segment									2
Net sales	$ 258,004	$ 243,975	$ 218,371	$ 243,525	$ 257,922	$ 243,049	$ 255,532	$ 238,349	$ 963,875	$ 994,852	$ 882,753
United States
Disaggregation of Revenue [Line Items]
Net sales									550,061	575,711	496,413
International
Disaggregation of Revenue [Line Items]
Net sales									413,814	419,141	386,340
Cardiovascular
Disaggregation of Revenue [Line Items]
Net sales									934,202	960,981	849,477
Cardiovascular | Peripheral Intervention
Disaggregation of Revenue [Line Items]
Net sales									341,568	350,936	276,113
Cardiovascular | Cardiac Intervention
Disaggregation of Revenue [Line Items]
Net sales									279,671	304,797	278,496
Cardiovascular | Custom Procedural Solutions
Disaggregation of Revenue [Line Items]
Net sales									203,196	187,359	180,332
Cardiovascular | OEM
Disaggregation of Revenue [Line Items]
Net sales									109,767	117,889	114,536
Cardiovascular | United States
Disaggregation of Revenue [Line Items]
Net sales									522,203	543,116	464,224
Cardiovascular | United States | Peripheral Intervention
Disaggregation of Revenue [Line Items]
Net sales									211,999	226,788	171,277
Cardiovascular | United States | Cardiac Intervention
Disaggregation of Revenue [Line Items]
Net sales									108,109	115,604	104,263
Cardiovascular | United States | Custom Procedural Solutions
Disaggregation of Revenue [Line Items]
Net sales									110,269	99,659	96,730
Cardiovascular | United States | OEM
Disaggregation of Revenue [Line Items]
Net sales									91,826	101,065	91,954
Cardiovascular | International
Disaggregation of Revenue [Line Items]
Net sales									411,999	417,865	385,253
Cardiovascular | International | Peripheral Intervention
Disaggregation of Revenue [Line Items]
Net sales									129,569	124,148	104,836
Cardiovascular | International | Cardiac Intervention
Disaggregation of Revenue [Line Items]
Net sales									171,562	189,193	174,233
Cardiovascular | International | Custom Procedural Solutions
Disaggregation of Revenue [Line Items]
Net sales									92,927	87,700	83,602
Cardiovascular | International | OEM
Disaggregation of Revenue [Line Items]
Net sales									17,941	16,824	22,582
Endoscopy
Disaggregation of Revenue [Line Items]
Net sales									29,673	33,871	33,276
Endoscopy | Endoscopy Devices
Disaggregation of Revenue [Line Items]
Net sales									29,673	33,871	33,276
Endoscopy | United States | Endoscopy Devices
Disaggregation of Revenue [Line Items]
Net sales									27,858	32,595	32,189
Endoscopy | International | Endoscopy Devices
Disaggregation of Revenue [Line Items]
Net sales									$ 1,815	$ 1,276	$ 1,087