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Business Segments (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Segment Reporting Information [Line Items]        
Net sales $ 174,961 $ 179,255 $ 545,052 $ 559,262
Orthopedic Surgery [Member]
       
Segment Reporting Information [Line Items]        
Net sales 92,750 95,559 301,059 302,427
General Surgery [Member]
       
Segment Reporting Information [Line Items]        
Net sales 69,735 69,886 203,941 209,918
Surgical Visualization [Member]
       
Segment Reporting Information [Line Items]        
Net sales $ 12,476 $ 13,810 $ 40,052 $ 46,917