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Business Segments (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Segment Reporting Information [Line Items]    
Net sales $ 177,940us-gaap_SalesRevenueNet $ 181,941us-gaap_SalesRevenueNet
Orthopedic Surgery [Member]    
Segment Reporting Information [Line Items]    
Net sales 98,597us-gaap_SalesRevenueNet
/ cnmd_ProductLinesByTypeAxis
= cnmd_OrthopedicSurgeryMember		 105,948us-gaap_SalesRevenueNet
/ cnmd_ProductLinesByTypeAxis
= cnmd_OrthopedicSurgeryMember
General Surgery [Member]    
Segment Reporting Information [Line Items]    
Net sales 66,062us-gaap_SalesRevenueNet
/ cnmd_ProductLinesByTypeAxis
= cnmd_GeneralSurgeryMember		 63,460us-gaap_SalesRevenueNet
/ cnmd_ProductLinesByTypeAxis
= cnmd_GeneralSurgeryMember
Surgical Visualization [Member]    
Segment Reporting Information [Line Items]    
Net sales $ 13,281us-gaap_SalesRevenueNet
/ cnmd_ProductLinesByTypeAxis
= cnmd_SurgicalVisualizationMember		 $ 12,533us-gaap_SalesRevenueNet
/ cnmd_ProductLinesByTypeAxis
= cnmd_SurgicalVisualizationMember