NET INCOME (LOSS) PER SHARE (Narrative) (Details) - USD ($) shares in Thousands, $ in Thousands			12 Months Ended
	Dec. 15, 2016	Jul. 02, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Allocated share-based compensation expense			$ 17,310	$ 15,450	$ 14,554
Shares excluded from computation as their effect would be antidilutive (in shares)			200	200	400
Stock issued during period, shares, conversion of convertible securities (in shares)	2,900
Common stock from the exercise of call option with hedge participants (in shares)	2,900		2,946
Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock issued during period, shares, conversion of convertible securities (in shares)	2,900		2,946
Performance Shares and Restricted Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Additional EPS shares			600
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | SeaSpine Inc.
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Increase in incremental fair value, stock-based compensation awards		$ 4,400
Allocated share-based compensation expense			$ 700	$ 3,300
Compensation cost not yet recognized			$ 400