v3.8.0.1
SIGNIFICANT ACCOUNTING POLICIES - Assets Useful Lives (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]      
Impairment of intangible assets, finite-lived $ 0 $ 0 $ 0
Impairment of indefinitely-lived tradename assets $ 0 $ 0 $ 0
Minimum      
Property, Plant and Equipment [Line Items]      
Intangible asset, useful life 3 years    
Maximum      
Property, Plant and Equipment [Line Items]      
Intangible asset, useful life 20 years    
Building and building improvements | Minimum      
Property, Plant and Equipment [Line Items]      
Depreciable lives 25 years    
Building and building improvements | Maximum      
Property, Plant and Equipment [Line Items]      
Depreciable lives 30 years    
Furniture and fixtures | Minimum      
Property, Plant and Equipment [Line Items]      
Depreciable lives 5 years    
Furniture and fixtures | Maximum      
Property, Plant and Equipment [Line Items]      
Depreciable lives 7 years    
Computer equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Depreciable lives 3 years    
Computer equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Depreciable lives 5 years    
Business software      
Property, Plant and Equipment [Line Items]      
Depreciable lives 3 years    
Office and other equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Depreciable lives 5 years    
Office and other equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Depreciable lives 7 years    
Instruments      
Property, Plant and Equipment [Line Items]      
Depreciable lives 5 years    
Sample inventory      
Property, Plant and Equipment [Line Items]      
Depreciable lives 2 years