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SEGMENT AND GEOGRAPHIC INFORMATION - Total Revenue by Major Geographic Area (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Segment Reporting Information [Line Items]    
Revenues $ 233,665us-gaap_Revenues $ 215,059us-gaap_Revenues
United States    
Segment Reporting Information [Line Items]    
Revenues 180,960us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_US		 163,382us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_US
Europe    
Segment Reporting Information [Line Items]    
Revenues 26,764us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember		 25,324us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
Rest of World    
Segment Reporting Information [Line Items]    
Revenues $ 25,941us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= iart_RestOfWorldMember		 $ 26,353us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= iart_RestOfWorldMember