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Operations and Significant Accounting Policies (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Goodwill and Intangible Asset Impairment [Abstract]      
Goodwill $ 260,651 $ 256,232 $ 248,428
Other intangible assets, net $ 308,171 316,440  
Acquired Intangible Assets [Abstract]      
Weighted average amortization period (in years) 27 years    
Revenue Recognition [Abstract]      
Net Commission Service Fee Revenue 50.00%    
Shipping and handling costs $ 12,600 13,600 $ 12,600
Allowance for doubtful accounts $ 1,336 $ 1,239  
Linvatec Corporation [Member]      
Acquired Intangible Assets [Abstract]      
Number of years of historical revenue attrition used to evaluate acquired finite-lived intangible assets useful life 5 years    
Annual attrition rate used to evaluate acquired finite-lived intangible assets useful life 2.60%    
Customer Relationships [Member]      
Acquired Intangible Assets [Abstract]      
Weighted average amortization period (in years) 33 years    
Customer Relationships [Member] | Linvatec Corporation [Member]      
Acquired Intangible Assets [Abstract]      
Weighted average amortization period (in years) 38 years    
Customer Relationships [Member] | Other Acquisitions Excluding Linvatec Corporation[Member]      
Acquired Intangible Assets [Abstract]      
Weighted average amortization period (in years) 18 years    
Promotional, Marketing and Distribution Rights [Member]      
Acquired Intangible Assets [Abstract]      
Weighted average amortization period (in years) 25 years