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NET INCOME PER SHARE (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jul. 02, 2015
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Shares excluded from computation as their effect would be anti-dilutive   0.3 0.1  
Performance Shares and Restricted Units        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Weighted average number of shares outstanding, basic and diluted   0.1    
SeaSpine Inc. | Spinoff        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Incremental increase in stock based award expense after spinoff $ 4.4 $ 0.2   $ 3.3
Total unrecognized compensation costs   $ 0.9