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DISCONTINUED OPERATIONS - Narrative (Details)
 3 Months Ended 9 Months Ended
Jul. 02, 2015
USD ($)
director
shares
Sep. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
Dec. 31, 2014
USD ($)
Oct. 29, 2014
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Income (loss) from discontinued operations (net of tax expense, (benefit))   $ 0 $ 817,000 $ (10,370,000) $ 948,000    
SeaSpine Inc. | Spinoff              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Distribution of spinoff shares 100.00%            
Shares of Integra for share of SeaSpine | shares 3            
Cash $ 46,848,000         $ 260,000 $ 47,000,000
Discontinued Operations, Gain (Loss) on Distribution of Interest in Discontinued Operation, Net of Tax $ 0            
Income (loss) from discontinued operations (net of tax expense, (benefit))   0 817,000 (10,370,000) 948,000    
SeaSpine Inc. | Spinoff | Director              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Number of shared board members | director 3            
SeaSpine Inc. | Spinoff | Investor              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Discontinued Operations, Gain (Loss) on Distribution of Interest in Discontinued Operation, Net of Tax $ 0            
Supply Commitment | SeaSpine Inc.              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Period of continuing involvement after spinoff 3 years            
Revenue of SeaSpine   1,900,000 1,400,000 7,500,000 4,200,000    
Expenses of SeaSpine   1,100,000 $ 600,000 $ 2,400,000 $ 1,900,000    
Information Technology and Administrative Support | SeaSpine Inc.              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Revenue of SeaSpine   $ 1,800,000