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STOCK-BASED COMPENSATION (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 02, 2015
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2016
USD ($)
plan
shares
Dec. 31, 2015
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement by share-based payment award, number of plans | plan     3  
Grants in period, net of forfeitures (in shares) | shares     111,662  
Requisite service periods of awards, in years     3 years  
Stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock options exercisable, vesting period, in years     4 years  
Total unrecognized compensation costs   $ 4.0 $ 4.0  
Weighted-average period for cost recognition, in years     2 years  
Restricted stock awards/stock units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock options exercisable, vesting period, in years     3 years  
Total unrecognized compensation costs   22.2 $ 22.2  
Weighted-average period for cost recognition, in years     2 years  
Awards granted during period (in shares) | shares     155,371  
Performance shares        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards granted during period (in shares) | shares     78,177  
SeaSpine Inc. | Spinoff        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Incremental increase in stock based award expense after spinoff $ 4.4 0.2 $ 0.4 $ 3.3
Total unrecognized compensation costs   $ 0.7 $ 0.7  
Employee | Stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period, in years     8 years  
Directors and certain executive officers | Minimum | Stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period, in years     8 years  
Directors and certain executive officers | Maximum | Stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period, in years     10 years