Acquisitions and Divestitures - Additional Information (Detail)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Nov. 30, 2014
USD ($)
Aug. 31, 2015
USD ($)
Jul. 31, 2015
USD ($)
May. 31, 2015
USD ($)
Agreement
Oct. 31, 2014
USD ($)
Sep. 30, 2014
USD ($)
Aug. 31, 2014
USD ($)
Aug. 31, 2013
USD ($)
Jul. 31, 2013
USD ($)
Oct. 31, 2012
USD ($)
Sep. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Oct. 31, 2013
USD ($)
Business Acquisition [Line Items]                              
Weighted average useful life                       6 years      
Goodwill                       $ 17,789 $ 17,281 $ 15,031  
Gain on divestiture                       $ 360      
Impairment charges                         229    
Non-Occlusive Modeling Catheter Divestiture [Member]                              
Business Acquisition [Line Items]                              
Impairment charges                         200    
Charge to cost of sales                         300    
Merit Medical Ireland Limited [Member]                              
Business Acquisition [Line Items]                              
Asset sales agreement amount     $ 400                        
Gain on divestiture                     $ 400        
XenoSure [Member]                              
Business Acquisition [Line Items]                              
Purchase price for acquisition of assets and rights                   $ 4,600          
Cash paid for assets purchased                   4,300          
Cash paid for manufacturing and distribution rights                             $ 300
Intangible assets                   2,800          
Goodwill                   $ 1,800          
Maximum goodwill deductible for tax purposes                       15 years      
Weighted average useful life                       12 years      
XenoSure [Member] | Non-Compete Agreement [Member]                              
Business Acquisition [Line Items]                              
Acquisition date of assets and rights                       Oct. 31, 2012      
Clinical Instruments International, Inc [Member]                              
Business Acquisition [Line Items]                              
Purchase price for acquisition of assets and rights                 $ 1,100            
Acquisition date of assets and rights                       Jul. 30, 2013      
Cash paid for assets purchased         $ 200       900            
Intangible assets                 300            
Goodwill                 600            
Maximum goodwill deductible for tax purposes                       15 years      
Weighted average useful life                       5 years 8 months 12 days      
Inventory                 $ 200            
InaVein LLC [Member]                              
Business Acquisition [Line Items]                              
Purchase price for acquisition of assets and rights               $ 2,500              
Acquisition date of assets and rights                       Aug. 30, 2013      
Cash paid for assets purchased           $ 400   2,100              
Intangible assets               1,143              
Goodwill               $ 700              
Maximum goodwill deductible for tax purposes               15 years              
Acquisition-related contingent consideration               $ 1,400              
Fair value of contingent consideration             $ 100                
Assumed liabilities         $ 200     100              
Goodwill               668              
InaVein LLC [Member] | Non-Compete Agreement [Member]                              
Business Acquisition [Line Items]                              
Intangible assets               $ 70              
Weighted average useful life               5 years              
Xenotis Pty Ltd [Member]                              
Business Acquisition [Line Items]                              
Purchase price for acquisition of assets and rights             6,700                
Acquisition date of assets and rights                       Aug. 31, 2014      
Cash paid for assets purchased   $ 1,400         5,100                
Intangible assets             1,794                
Assumed liabilities             1,731                
Adjustment to tangible asset acquired $ 200                            
Business acquisition, assumed debt             1,100                
Goodwill             2,475                
Deferred tax assets acquired             2,400                
Xenotis Pty Ltd [Member] | Non-Compete Agreement [Member]                              
Business Acquisition [Line Items]                              
Intangible assets             $ 135                
Weighted average useful life             5 years                
Xenotis Pty Ltd [Member] | Europe [Member]                              
Business Acquisition [Line Items]                              
Purchase price for acquisition of assets and rights           $ 1,300                  
Cash paid for assets purchased                         $ 1,100    
Intangible assets                       $ 900      
Weighted average useful life           5 years                  
Inventory                       $ 400      
AngioScope [Member]                              
Business Acquisition [Line Items]                              
Purchase price for acquisition of assets and rights           $ 400                  
Cash paid for assets purchased           300                  
Intangible assets           276                  
Goodwill           $ 100                  
Maximum goodwill deductible for tax purposes           15 years                  
Inventory           $ 26                  
Goodwill           80                  
Balance payable to Clinical Instruments           100                  
AngioScope [Member] | Non-Compete Agreement [Member]                              
Business Acquisition [Line Items]                              
Intangible assets           $ 3                  
Weighted average useful life           2 years                  
Tru-Incise Valvulotome [Member]                              
Business Acquisition [Line Items]                              
Purchase price for acquisition of assets and rights       $ 1,400                      
Acquisition date of assets and rights                       May 31, 2015      
Cash paid for assets purchased       1,100                      
Intangible assets       545                      
Maximum goodwill deductible for tax purposes                         15 years    
Inventory       88                      
Goodwill       742                      
Balance payable to Clinical Instruments       300                      
Tru-Incise Valvulotome [Member] | Non-Compete Agreement [Member]                              
Business Acquisition [Line Items]                              
Intangible assets       $ 120                      
Weighted average useful life       5 years                      
UreSil, LLC, Distributors [Member]                              
Business Acquisition [Line Items]                              
Purchase price for acquisition of assets and rights       $ 200                      
Intangible assets       $ 200                      
Weighted average useful life                       3 years      
Number of definitive agreements | Agreement       8                      
Grex Medical Oy [Member]                              
Business Acquisition [Line Items]                              
Purchase price for acquisition of assets and rights   $ 200                          
Acquisition date of assets and rights                       Jan. 01, 2016