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Acquisitions - Narrative (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Feb. 14, 2018
USD ($)
Oct. 02, 2017
USD ($)
Aug. 04, 2017
USD ($)
Jul. 03, 2017
USD ($)
May 01, 2017
USD ($)
Jan. 31, 2017
USD ($)
patents
Jul. 06, 2016
USD ($)
Feb. 04, 2016
USD ($)
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Becton, Dickinson and Company                        
Business Acquisition [Line Items]                        
Total purchase price $ 100,100                      
Net sales related to acquisition                 $ 6,300      
Acquisition-related costs                 1,800      
Weighted average useful life 8 years                      
Becton, Dickinson and Company | Developed technology                        
Business Acquisition [Line Items]                        
Useful life 8 years                      
Becton, Dickinson and Company | Trademarks                        
Business Acquisition [Line Items]                        
Useful life 9 years                      
Becton, Dickinson and Company | Customer Lists                        
Business Acquisition [Line Items]                        
Useful life 7 years                      
ITL Healthcare Pty Ltd                        
Business Acquisition [Line Items]                        
Total purchase price   $ 11,300                    
Net sales related to acquisition                 2,200      
ITL Healthcare Pty Ltd | Customer Lists                        
Business Acquisition [Line Items]                        
Useful life   7 years                    
Laurane Medical S.A.S.                        
Business Acquisition [Line Items]                        
Total purchase price     $ 16,500                  
Weighted average useful life     11 years 11 months                  
Contingent liability     $ 5,500                  
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]                        
Total purchase price       $ 6,800                
Net sales related to acquisition                 545      
Weighted average useful life       8 years 11 months 15 days                
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              
Contingent liability         $ 4,900              
Vascular Access Technologies, Inc. | Developed technology                        
Business Acquisition [Line Items]                        
Useful life         15 years              
Argon Medical Devices, Inc.                        
Business Acquisition [Line Items]                        
Total purchase price           $ 10,100            
Net sales related to acquisition                 12,500 $ 7,200    
Weighted average useful life           5 years 11 months 15 days            
Working capital adjustment           $ (797)            
Argon Medical Devices, Inc. | Cardiovascular Segment                        
Business Acquisition [Line Items]                        
Acquisition-related costs                     $ 2,600  
Argon Medical Devices, Inc. | Scenario, Previously Reported                        
Business Acquisition [Line Items]                        
Total purchase price           $ 10,900            
Argon Medical Devices, Inc. | Developed technology                        
Business Acquisition [Line Items]                        
Useful life           7 years            
Argon Medical Devices, Inc. | Trademarks                        
Business Acquisition [Line Items]                        
Useful life           5 years            
Argon Medical Devices, Inc. | Customer Lists                        
Business Acquisition [Line Items]                        
Useful life           5 years            
Catheter Connections, Inc.                        
Business Acquisition [Line Items]                        
Total purchase price           $ 38,000            
Net sales related to acquisition                 3,200 1,800    
Weighted average useful life           11 years 8 months            
Number of patents acquired | patents           40            
Catheter Connections, Inc. | Cardiovascular Segment                        
Business Acquisition [Line Items]                        
Acquisition-related costs                     $ 482  
Catheter Connections, Inc. | Developed technology                        
Business Acquisition [Line Items]                        
Useful life           12 years            
Catheter Connections, Inc. | Trademarks                        
Business Acquisition [Line Items]                        
Useful life           10 years            
Catheter Connections, Inc. | Customer Lists                        
Business Acquisition [Line Items]                        
Useful life           8 years            
DFINE, Inc.                        
Business Acquisition [Line Items]                        
Total purchase price             $ 97,500          
Net sales related to acquisition                 7,300 7,100    
Weighted average useful life             14 years 10 months          
Consideration paid related to net working capital adjustment             $ 578          
Trade receivables acquired, gross             4,300          
Trade receivables, expected to be uncollectible             $ 224          
DFINE, Inc. | Cardiovascular Segment                        
Business Acquisition [Line Items]                        
Acquisition-related costs                       $ 1,600
DFINE, Inc. | Developed technology                        
Business Acquisition [Line Items]                        
Useful life             15 years          
DFINE, Inc. | Trademarks                        
Business Acquisition [Line Items]                        
Useful life             15 years          
DFINE, Inc. | Customer Lists                        
Business Acquisition [Line Items]                        
Useful life             9 years          
HeRO®Graft                        
Business Acquisition [Line Items]                        
Total purchase price               $ 18,500        
Weighted average useful life               9 years 9 months 25 days        
Income since acquisition date                 $ 2,000 $ 2,200    
HeRO®Graft | Developed technology                        
Business Acquisition [Line Items]                        
Useful life               10 years        
HeRO®Graft | Trademarks                        
Business Acquisition [Line Items]                        
Useful life               5 years 6 months        
HeRO®Graft | Customer Lists                        
Business Acquisition [Line Items]                        
Useful life               12 years