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NET (LOSS) INCOME PER SHARE (Narrative) (Details) - USD ($) $ in Thousands, shares in Millions |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 01, 2015 | Dec. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Allocated share-based compensation expense |  |  | $ 15,450 | $ 14,554 | $ 9,842
Shares excluded from computation as their effect would be antidilutive |  |  | 0.1 | 0.2 | 0.7
Additional EPS shares |  | 0.2 | 0.2 |  |
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | SeaSpine Inc. |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Share-based compensation arrangement by share-based payment award, plan modification, incremental compensation cost | $ 4,400 |  |  |  |
Allocated share-based compensation expense |  | $ 3,300 | $ 3,300 |  |
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized |  | $ 1,100 | $ 1,100 |  |

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